MediumFix available
squid, squid3 — security advisory
Squid is a caching proxy for the Web. Prior to 7.6, due to an improper input validation bug in cache digest reply handling (peerDigestSwapInMask in src/peer_digest.cc), Squid is vulnerable to a heap-based buffer overflow: a cache digest's on-the-wire size may be larger than the mask_size declared within the digest, so a trusted peer sending a maliciously crafted reply to a cache_digest request message can trigger the overflow. This attack is limited to Squid instances compiled with the --enable-cache-digests option and configured with cache_peer entries. This issue is fixed in version 7.6.
- Products
- squid, squid3
- Affected versions
- 3.3.8-1ubuntu16, 3.3.8-1ubuntu17, 3.5.12-1ubuntu6, 3.5.12-1ubuntu7, 3.5.12-1ubuntu7.1, 3.5.12-1ubuntu7.10, 3.5.12-1ubuntu7.11, 3.5.12-1ubuntu7.12, 3.5.12-1ubuntu7.13, 3.5.12-1ubuntu7.14, 3.5.12-1ubuntu7.15, 3.5.12-1ubuntu7.16, 3.5.12-1ubuntu7.16+esm1, 3.5.12-1ubuntu7.16+esm2, 3.5.12-1ubuntu7.16+esm3, 3.5.12-1ubuntu7.16+esm4, 3.5.12-1ubuntu7.16+esm5, 3.5.12-1ubuntu7.16+esm6, 3.5.12-1ubuntu7.2, 3.5.12-1ubuntu7.3, 3.5.12-1ubuntu7.4, 3.5.12-1ubuntu7.5, 3.5.12-1ubuntu7.6, 3.5.12-1ubuntu7.7, 3.5.12-1ubuntu7.8, 3.5.12-1ubuntu7.9, 3.5.23-5ubuntu1, 3.5.23-5ubuntu2, 3.5.27-1ubuntu1, 3.5.27-1ubuntu1.1, 3.5.27-1ubuntu1.10, 3.5.27-1ubuntu1.11, 3.5.27-1ubuntu1.12, 3.5.27-1ubuntu1.13, 3.5.27-1ubuntu1.14, 3.5.27-1ubuntu1.14+esm1, 3.5.27-1ubuntu1.14+esm2, 3.5.27-1ubuntu1.14+esm3, 3.5.27-1ubuntu1.14+esm4, 3.5.27-1ubuntu1.14+esm5, 3.5.27-1ubuntu1.2, 3.5.27-1ubuntu1.3, 3.5.27-1ubuntu1.4, 3.5.27-1ubuntu1.5, 3.5.27-1ubuntu1.6, 3.5.27-1ubuntu1.7, 3.5.27-1ubuntu1.8, 3.5.27-1ubuntu1.9, 4.10-1ubuntu1, 4.10-1ubuntu1.1, 4.10-1ubuntu1.10, 4.10-1ubuntu1.11, 4.10-1ubuntu1.12, 4.10-1ubuntu1.13, 4.10-1ubuntu1.13+esm1, 4.10-1ubuntu1.13+esm2, 4.10-1ubuntu1.2, 4.10-1ubuntu1.3, 4.10-1ubuntu1.4, 4.10-1ubuntu1.5, 4.10-1ubuntu1.6, 4.10-1ubuntu1.7, 4.10-1ubuntu1.8, 4.10-1ubuntu1.9, 4.13-10ubuntu5, 4.8-1ubuntu2, 4.8-1ubuntu3, 4.9-2ubuntu1, 4.9-2ubuntu2, 4.9-2ubuntu3, 4.9-2ubuntu4, 5.2-1ubuntu1, 5.2-1ubuntu3, 5.2-1ubuntu4, 5.2-1ubuntu4.1, 5.2-1ubuntu4.2, 5.2-1ubuntu4.3, 5.7-0ubuntu0.22.04.1, 5.7-0ubuntu0.22.04.2, 5.7-0ubuntu0.22.04.3, 5.7-0ubuntu0.22.04.4, 5.9-0ubuntu0.22.04.1, 5.9-0ubuntu0.22.04.2, 5.9-0ubuntu0.22.04.3, 5.9-0ubuntu0.22.04.4, 5.9-0ubuntu0.22.04.5, 6.1-2ubuntu1, 6.1-2ubuntu2, 6.10-0ubuntu0.24.04.1, 6.13-0ubuntu0.24.04.1, 6.13-0ubuntu0.24.04.2, 6.13-0ubuntu0.24.04.3, 6.13-1ubuntu1, 6.13-1ubuntu2, 6.13-1ubuntu3, 6.13-1ubuntu4, 6.13-1ubuntu4.1, 6.13-1ubuntu5, 6.14-0ubuntu0.24.04.1, 6.14-0ubuntu0.24.04.2, 6.14-0ubuntu0.25.10.1, 6.14-0ubuntu0.25.10.2, 6.5-1ubuntu1, 6.5-1ubuntu2, 6.5-1ubuntu3, 6.6-1ubuntu4, 6.6-1ubuntu5, 6.6-1ubuntu5.1, 7.2-2ubuntu1, 7.2-2ubuntu2
- Fixed versions
- 3.5.12-1ubuntu7.16+esm7, 3.5.27-1ubuntu1.14+esm6, 4.10-1ubuntu1.13+esm3, 5.9-0ubuntu0.22.04.7, 6.14-0ubuntu0.24.04.4, 6.14-0ubuntu0.25.10.4, 7.2-2ubuntu2.2
- CVEs
- CVE-2026-50012
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 16:39 UTC · Revision 1
Source evidence
Squid is a caching proxy for the Web. Prior to 7.6, due to an improper input validation bug in cache digest reply handling (peerDigestSwapInMask in src/peer_digest.cc), Squid is vulnerable to a heap-based buffer overflow: a cache digest's on-the-wire size may be larger than the mask_size declared within the digest, so a trusted peer sending a maliciously crafted reply to a cache_digest request message can trigger the overflow. This attack is limited to Squid instances compiled with the --enable-cache-digests option and configured with cache_peer entries. This issue is fixed in version 7.6.
osv:UBUNTU-CVE-2026-50012
squid3
Fixed versions: 3.5.12-1ubuntu7.16+esm7
squid3
Fixed versions: 3.5.27-1ubuntu1.14+esm6
squid
Fixed versions: 4.10-1ubuntu1.13+esm3
squid
Fixed versions: 5.9-0ubuntu0.22.04.7
squid
Fixed versions: 6.14-0ubuntu0.24.04.4
squid
Fixed versions: 6.14-0ubuntu0.25.10.4
squid
Fixed versions: 7.2-2ubuntu2.2
Complete source record
{
"id": "eee5bb668150ab329d0a98820ce0e45fbdb4dd13732ec167b9a9d7a57c41d34c",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-50012",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2026-50012",
"summary": "Squid is a caching proxy for the Web. Prior to 7.6, due to an improper input validation bug in cache digest reply handling (peerDigestSwapInMask in src/peer_digest.cc), Squid is vulnerable to a heap-based buffer overflow: a cache digest's on-the-wire size may be larger than the mask_size declared within the digest, so a trusted peer sending a maliciously crafted reply to a cache_digest request message can trigger the overflow. This attack is limited to Squid instances compiled with the --enable-cache-digests option and configured with cache_peer entries. This issue is fixed in version 7.6.",
"evidence": "osv:UBUNTU-CVE-2026-50012",
"products": [
{
"name": {
"value": "squid3",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "3.5.12-1ubuntu7.16+esm7",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": [
{
"value": "3.3.8-1ubuntu16",
"evidence": "/affected/0/versions"
},
{
"value": "3.3.8-1ubuntu17",
"evidence": "/affected/0/versions"
},
{
"value": "3.5.12-1ubuntu6",
"evidence": "/affected/0/versions"
},
{
"value": "3.5.12-1ubuntu7",
"evidence": "/affected/0/versions"
},
{
"value": "3.5.12-1ubuntu7.1",
"evidence": "/affected/0/versions"
},
{
"value": "3.5.12-1ubuntu7.2",
"evidence": "/affected/0/versions"
},
{
"value": "3.5.12-1ubuntu7.3",
"evidence": "/affected/0/versions"
},
{
"value": "3.5.12-1ubuntu7.4",
"evidence": "/affected/0/versions"
},
{
"value": "3.5.12-1ubuntu7.5",
"evidence": "/affected/0/versions"
},
{
"value": "3.5.12-1ubuntu7.6",
"evidence": "/affected/0/versions"
},
{
"value": "3.5.12-1ubuntu7.7",
"evidence": "/affected/0/versions"
},
{
"value": "3.5.12-1ubuntu7.8",
"evidence": "/affected/0/versions"
},
{
"value": "3.5.12-1ubuntu7.9",
"evidence": "/affected/0/versions"
},
{
"value": "3.5.12-1ubuntu7.10",
"evidence": "/affected/0/versions"
},
{
"value": "3.5.12-1ubuntu7.11",
"evidence": "/affected/0/versions"
},
{
"value": "3.5.12-1ubuntu7.12",
"evidence": "/affected/0/versions"
},
{
"value": "3.5.12-1ubuntu7.13",
"evidence": "/affected/0/versions"
},
{
"value": "3.5.12-1ubuntu7.14",
"evidence": "/affected/0/versions"
},
{
"value": "3.5.12-1ubuntu7.15",
"evidence": "/affected/0/versions"
},
{
"value": "3.5.12-1ubuntu7.16",
"evidence": "/affected/0/versions"
},
{
"value": "3.5.12-1ubuntu7.16+esm1",
"evidence": "/affected/0/versions"
},
{
"value": "3.5.12-1ubuntu7.16+esm2",
"evidence": "/affected/0/versions"
},
{
"value": "3.5.12-1ubuntu7.16+esm3",
"evidence": "/affected/0/versions"
},
{
"value": "3.5.12-1ubuntu7.16+esm4",
"evidence": "/affected/0/versions"
},
{
"value": "3.5.12-1ubuntu7.16+esm5",
"evidence": "/affected/0/versions"
},
{
"value": "3.5.12-1ubuntu7.16+esm6",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "squid3",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "3.5.27-1ubuntu1.14+esm6",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": [
{
"value": "3.5.23-5ubuntu1",
"evidence": "/affected/1/versions"
},
{
"value": "3.5.23-5ubuntu2",
"evidence": "/affected/1/versions"
},
{
"value": "3.5.27-1ubuntu1",
"evidence": "/affected/1/versions"
},
{
"value": "3.5.27-1ubuntu1.1",
"evidence": "/affected/1/versions"
},
{
"value": "3.5.27-1ubuntu1.2",
"evidence": "/affected/1/versions"
},
{
"value": "3.5.27-1ubuntu1.3",
"evidence": "/affected/1/versions"
},
{
"value": "3.5.27-1ubuntu1.4",
"evidence": "/affected/1/versions"
},
{
"value": "3.5.27-1ubuntu1.5",
"evidence": "/affected/1/versions"
},
{
"value": "3.5.27-1ubuntu1.6",
"evidence": "/affected/1/versions"
},
{
"value": "3.5.27-1ubuntu1.7",
"evidence": "/affected/1/versions"
},
{
"value": "3.5.27-1ubuntu1.8",
"evidence": "/affected/1/versions"
},
{
"value": "3.5.27-1ubuntu1.9",
"evidence": "/affected/1/versions"
},
{
"value": "3.5.27-1ubuntu1.10",
"evidence": "/affected/1/versions"
},
{
"value": "3.5.27-1ubuntu1.11",
"evidence": "/affected/1/versions"
},
{
"value": "3.5.27-1ubuntu1.12",
"evidence": "/affected/1/versions"
},
{
"value": "3.5.27-1ubuntu1.13",
"evidence": "/affected/1/versions"
},
{
"value": "3.5.27-1ubuntu1.14",
"evidence": "/affected/1/versions"
},
{
"value": "3.5.27-1ubuntu1.14+esm1",
"evidence": "/affected/1/versions"
},
{
"value": "3.5.27-1ubuntu1.14+esm2",
"evidence": "/affected/1/versions"
},
{
"value": "3.5.27-1ubuntu1.14+esm3",
"evidence": "/affected/1/versions"
},
{
"value": "3.5.27-1ubuntu1.14+esm4",
"evidence": "/affected/1/versions"
},
{
"value": "3.5.27-1ubuntu1.14+esm5",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "squid",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "4.10-1ubuntu1.13+esm3",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": [
{
"value": "4.8-1ubuntu2",
"evidence": "/affected/2/versions"
},
{
"value": "4.8-1ubuntu3",
"evidence": "/affected/2/versions"
},
{
"value": "4.9-2ubuntu1",
"evidence": "/affected/2/versions"
},
{
"value": "4.9-2ubuntu2",
"evidence": "/affected/2/versions"
},
{
"value": "4.9-2ubuntu3",
"evidence": "/affected/2/versions"
},
{
"value": "4.9-2ubuntu4",
"evidence": "/affected/2/versions"
},
{
"value": "4.10-1ubuntu1",
"evidence": "/affected/2/versions"
},
{
"value": "4.10-1ubuntu1.1",
"evidence": "/affected/2/versions"
},
{
"value": "4.10-1ubuntu1.2",
"evidence": "/affected/2/versions"
},
{
"value": "4.10-1ubuntu1.3",
"evidence": "/affected/2/versions"
},
{
"value": "4.10-1ubuntu1.4",
"evidence": "/affected/2/versions"
},
{
"value": "4.10-1ubuntu1.5",
"evidence": "/affected/2/versions"
},
{
"value": "4.10-1ubuntu1.6",
"evidence": "/affected/2/versions"
},
{
"value": "4.10-1ubuntu1.7",
"evidence": "/affected/2/versions"
},
{
"value": "4.10-1ubuntu1.8",
"evidence": "/affected/2/versions"
},
{
"value": "4.10-1ubuntu1.9",
"evidence": "/affected/2/versions"
},
{
"value": "4.10-1ubuntu1.10",
"evidence": "/affected/2/versions"
},
{
"value": "4.10-1ubuntu1.11",
"evidence": "/affected/2/versions"
},
{
"value": "4.10-1ubuntu1.12",
"evidence": "/affected/2/versions"
},
{
"value": "4.10-1ubuntu1.13",
"evidence": "/affected/2/versions"
},
{
"value": "4.10-1ubuntu1.13+esm1",
"evidence": "/affected/2/versions"
},
{
"value": "4.10-1ubuntu1.13+esm2",
"evidence": "/affected/2/versions"
}
]
},
{
"name": {
"value": "squid",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "5.9-0ubuntu0.22.04.7",
"evidence": "/affected/3/ranges"
}
],
"affected_versions": [
{
"value": "4.13-10ubuntu5",
"evidence": "/affected/3/versions"
},
{
"value": "5.2-1ubuntu1",
"evidence": "/affected/3/versions"
},
{
"value": "5.2-1ubuntu3",
"evidence": "/affected/3/versions"
},
{
"value": "5.2-1ubuntu4",
"evidence": "/affected/3/versions"
},
{
"value": "5.2-1ubuntu4.1",
"evidence": "/affected/3/versions"
},
{
"value": "5.2-1ubuntu4.2",
"evidence": "/affected/3/versions"
},
{
"value": "5.2-1ubuntu4.3",
"evidence": "/affected/3/versions"
},
{
"value": "5.7-0ubuntu0.22.04.1",
"evidence": "/affected/3/versions"
},
{
"value": "5.7-0ubuntu0.22.04.2",
"evidence": "/affected/3/versions"
},
{
"value": "5.7-0ubuntu0.22.04.3",
"evidence": "/affected/3/versions"
},
{
"value": "5.7-0ubuntu0.22.04.4",
"evidence": "/affected/3/versions"
},
{
"value": "5.9-0ubuntu0.22.04.1",
"evidence": "/affected/3/versions"
},
{
"value": "5.9-0ubuntu0.22.04.2",
"evidence": "/affected/3/versions"
},
{
"value": "5.9-0ubuntu0.22.04.3",
"evidence": "/affected/3/versions"
},
{
"value": "5.9-0ubuntu0.22.04.4",
"evidence": "/affected/3/versions"
},
{
"value": "5.9-0ubuntu0.22.04.5",
"evidence": "/affected/3/versions"
}
]
},
{
"name": {
"value": "squid",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "6.14-0ubuntu0.24.04.4",
"evidence": "/affected/4/ranges"
}
],
"affected_versions": [
{
"value": "6.1-2ubuntu1",
"evidence": "/affected/4/versions"
},
{
"value": "6.1-2ubuntu2",
"evidence": "/affected/4/versions"
},
{
"value": "6.5-1ubuntu1",
"evidence": "/affected/4/versions"
},
{
"value": "6.5-1ubuntu2",
"evidence": "/affected/4/versions"
},
{
"value": "6.5-1ubuntu3",
"evidence": "/affected/4/versions"
},
{
"value": "6.6-1ubuntu4",
"evidence": "/affected/4/versions"
},
{
"value": "6.6-1ubuntu5",
"evidence": "/affected/4/versions"
},
{
"value": "6.6-1ubuntu5.1",
"evidence": "/affected/4/versions"
},
{
"value": "6.10-0ubuntu0.24.04.1",
"evidence": "/affected/4/versions"
},
{
"value": "6.13-0ubuntu0.24.04.1",
"evidence": "/affected/4/versions"
},
{
"value": "6.13-0ubuntu0.24.04.2",
"evidence": "/affected/4/versions"
},
{
"value": "6.13-0ubuntu0.24.04.3",
"evidence": "/affected/4/versions"
},
{
"value": "6.14-0ubuntu0.24.04.1",
"evidence": "/affected/4/versions"
},
{
"value": "6.14-0ubuntu0.24.04.2",
"evidence": "/affected/4/versions"
}
]
},
{
"name": {
"value": "squid",
"evidence": "/affected/5/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "6.14-0ubuntu0.25.10.4",
"evidence": "/affected/5/ranges"
}
],
"affected_versions": [
{
"value": "6.13-1ubuntu1",
"evidence": "/affected/5/versions"
},
{
"value": "6.13-1ubuntu2",
"evidence": "/affected/5/versions"
},
{
"value": "6.13-1ubuntu3",
"evidence": "/affected/5/versions"
},
{
"value": "6.13-1ubuntu4",
"evidence": "/affected/5/versions"
},
{
"value": "6.13-1ubuntu4.1",
"evidence": "/affected/5/versions"
},
{
"value": "6.14-0ubuntu0.25.10.1",
"evidence": "/affected/5/versions"
},
{
"value": "6.14-0ubuntu0.25.10.2",
"evidence": "/affected/5/versions"
}
]
},
{
"name": {
"value": "squid",
"evidence": "/affected/6/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "7.2-2ubuntu2.2",
"evidence": "/affected/6/ranges"
}
],
"affected_versions": [
{
"value": "6.13-1ubuntu4",
"evidence": "/affected/6/versions"
},
{
"value": "6.13-1ubuntu5",
"evidence": "/affected/6/versions"
},
{
"value": "7.2-2ubuntu1",
"evidence": "/affected/6/versions"
},
{
"value": "7.2-2ubuntu2",
"evidence": "/affected/6/versions"
}
]
}
],
"severity": "medium",
"structured": {
"id": "UBUNTU-CVE-2026-50012",
"aliases": [
"UBUNTU-CVE-2026-50012"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.5.12-1ubuntu7.16+esm7"
}
]
}
],
"package": {
"name": "squid3",
"purl": "pkg:deb/ubuntu/squid3?arch=source&distro=esm-infra-legacy%2Fxenial",
"ecosystem": "Ubuntu:Pro:16.04:LTS"
},
"versions": [
"3.3.8-1ubuntu16",
"3.3.8-1ubuntu17",
"3.5.12-1ubuntu6",
"3.5.12-1ubuntu7",
"3.5.12-1ubuntu7.1",
"3.5.12-1ubuntu7.2",
"3.5.12-1ubuntu7.3",
"3.5.12-1ubuntu7.4",
"3.5.12-1ubuntu7.5",
"3.5.12-1ubuntu7.6",
"3.5.12-1ubuntu7.7",
"3.5.12-1ubuntu7.8",
"3.5.12-1ubuntu7.9",
"3.5.12-1ubuntu7.10",
"3.5.12-1ubuntu7.11",
"3.5.12-1ubuntu7.12",
"3.5.12-1ubuntu7.13",
"3.5.12-1ubuntu7.14",
"3.5.12-1ubuntu7.15",
"3.5.12-1ubuntu7.16",
"3.5.12-1ubuntu7.16+esm1",
"3.5.12-1ubuntu7.16+esm2",
"3.5.12-1ubuntu7.16+esm3",
"3.5.12-1ubuntu7.16+esm4",
"3.5.12-1ubuntu7.16+esm5",
"3.5.12-1ubuntu7.16+esm6"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-50012.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "squid",
"binary_version": "3.5.12-1ubuntu7.16+esm7"
},
{
"binary_name": "squid-cgi",
"binary_version": "3.5.12-1ubuntu7.16+esm7"
},
{
"binary_name": "squid-common",
"binary_version": "3.5.12-1ubuntu7.16+esm7"
},
{
"binary_name": "squid-purge",
"binary_version": "3.5.12-1ubuntu7.16+esm7"
},
{
"binary_name": "squid3",
"binary_version": "3.5.12-1ubuntu7.16+esm7"
},
{
"binary_name": "squidclient",
"binary_version": "3.5.12-1ubuntu7.16+esm7"
}
],
"availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.5.27-1ubuntu1.14+esm6"
}
]
}
],
"package": {
"name": "squid3",
"purl": "pkg:deb/ubuntu/squid3?arch=source&distro=esm-infra%2Fbionic",
"ecosystem": "Ubuntu:Pro:18.04:LTS"
},
"versions": [
"3.5.23-5ubuntu1",
"3.5.23-5ubuntu2",
"3.5.27-1ubuntu1",
"3.5.27-1ubuntu1.1",
"3.5.27-1ubuntu1.2",
"3.5.27-1ubuntu1.3",
"3.5.27-1ubuntu1.4",
"3.5.27-1ubuntu1.5",
"3.5.27-1ubuntu1.6",
"3.5.27-1ubuntu1.7",
"3.5.27-1ubuntu1.8",
"3.5.27-1ubuntu1.9",
"3.5.27-1ubuntu1.10",
"3.5.27-1ubuntu1.11",
"3.5.27-1ubuntu1.12",
"3.5.27-1ubuntu1.13",
"3.5.27-1ubuntu1.14",
"3.5.27-1ubuntu1.14+esm1",
"3.5.27-1ubuntu1.14+esm2",
"3.5.27-1ubuntu1.14+esm3",
"3.5.27-1ubuntu1.14+esm4",
"3.5.27-1ubuntu1.14+esm5"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-50012.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "squid",
"binary_version": "3.5.27-1ubuntu1.14+esm6"
},
{
"binary_name": "squid-cgi",
"binary_version": "3.5.27-1ubuntu1.14+esm6"
},
{
"binary_name": "squid-common",
"binary_version": "3.5.27-1ubuntu1.14+esm6"
},
{
"binary_name": "squid-purge",
"binary_version": "3.5.27-1ubuntu1.14+esm6"
},
{
"binary_name": "squid3",
"binary_version": "3.5.27-1ubuntu1.14+esm6"
},
{
"binary_name": "squidclient",
"binary_version": "3.5.27-1ubuntu1.14+esm6"
}
],
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "4.10-1ubuntu1.13+esm3"
}
]
}
],
"package": {
"name": "squid",
"purl": "pkg:deb/ubuntu/squid?arch=source&distro=esm-infra%2Ffocal",
"ecosystem": "Ubuntu:Pro:20.04:LTS"
},
"versions": [
"4.8-1ubuntu2",
"4.8-1ubuntu3",
"4.9-2ubuntu1",
"4.9-2ubuntu2",
"4.9-2ubuntu3",
"4.9-2ubuntu4",
"4.10-1ubuntu1",
"4.10-1ubuntu1.1",
"4.10-1ubuntu1.2",
"4.10-1ubuntu1.3",
"4.10-1ubuntu1.4",
"4.10-1ubuntu1.5",
"4.10-1ubuntu1.6",
"4.10-1ubuntu1.7",
"4.10-1ubuntu1.8",
"4.10-1ubuntu1.9",
"4.10-1ubuntu1.10",
"4.10-1ubuntu1.11",
"4.10-1ubuntu1.12",
"4.10-1ubuntu1.13",
"4.10-1ubuntu1.13+esm1",
"4.10-1ubuntu1.13+esm2"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-50012.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "squid",
"binary_version": "4.10-1ubuntu1.13+esm3"
},
{
"binary_name": "squid-cgi",
"binary_version": "4.10-1ubuntu1.13+esm3"
},
{
"binary_name": "squid-common",
"binary_version": "4.10-1ubuntu1.13+esm3"
},
{
"binary_name": "squid-purge",
"binary_version": "4.10-1ubuntu1.13+esm3"
},
{
"binary_name": "squidclient",
"binary_version": "4.10-1ubuntu1.13+esm3"
}
],
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "5.9-0ubuntu0.22.04.7"
}
]
}
],
"package": {
"name": "squid",
"purl": "pkg:deb/ubuntu/squid?arch=source&distro=jammy",
"ecosystem": "Ubuntu:22.04:LTS"
},
"versions": [
"4.13-10ubuntu5",
"5.2-1ubuntu1",
"5.2-1ubuntu3",
"5.2-1ubuntu4",
"5.2-1ubuntu4.1",
"5.2-1ubuntu4.2",
"5.2-1ubuntu4.3",
"5.7-0ubuntu0.22.04.1",
"5.7-0ubuntu0.22.04.2",
"5.7-0ubuntu0.22.04.3",
"5.7-0ubuntu0.22.04.4",
"5.9-0ubuntu0.22.04.1",
"5.9-0ubuntu0.22.04.2",
"5.9-0ubuntu0.22.04.3",
"5.9-0ubuntu0.22.04.4",
"5.9-0ubuntu0.22.04.5"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-50012.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "squid",
"binary_version": "5.9-0ubuntu0.22.04.7"
},
{
"binary_name": "squid-cgi",
"binary_version": "5.9-0ubuntu0.22.04.7"
},
{
"binary_name": "squid-common",
"binary_version": "5.9-0ubuntu0.22.04.7"
},
{
"binary_name": "squid-openssl",
"binary_version": "5.9-0ubuntu0.22.04.7"
},
{
"binary_name": "squid-purge",
"binary_version": "5.9-0ubuntu0.22.04.7"
},
{
"binary_name": "squidclient",
"binary_version": "5.9-0ubuntu0.22.04.7"
}
],
"availability": "No subscription required"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "6.14-0ubuntu0.24.04.4"
}
]
}
],
"package": {
"name": "squid",
"purl": "pkg:deb/ubuntu/squid?arch=source&distro=noble",
"ecosystem": "Ubuntu:24.04:LTS"
},
"versions": [
"6.1-2ubuntu1",
"6.1-2ubuntu2",
"6.5-1ubuntu1",
"6.5-1ubuntu2",
"6.5-1ubuntu3",
"6.6-1ubuntu4",
"6.6-1ubuntu5",
"6.6-1ubuntu5.1",
"6.10-0ubuntu0.24.04.1",
"6.13-0ubuntu0.24.04.1",
"6.13-0ubuntu0.24.04.2",
"6.13-0ubuntu0.24.04.3",
"6.14-0ubuntu0.24.04.1",
"6.14-0ubuntu0.24.04.2"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-50012.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "squid",
"binary_version": "6.14-0ubuntu0.24.04.4"
},
{
"binary_name": "squid-cgi",
"binary_version": "6.14-0ubuntu0.24.04.4"
},
{
"binary_name": "squid-common",
"binary_version": "6.14-0ubuntu0.24.04.4"
},
{
"binary_name": "squid-openssl",
"binary_version": "6.14-0ubuntu0.24.04.4"
},
{
"binary_name": "squid-purge",
"binary_version": "6.14-0ubuntu0.24.04.4"
},
{
"binary_name": "squidclient",
"binary_version": "6.14-0ubuntu0.24.04.4"
}
],
"availability": "No subscription required"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "6.14-0ubuntu0.25.10.4"
}
]
}
],
"package": {
"name": "squid",
"purl": "pkg:deb/ubuntu/squid?arch=source&distro=questing",
"ecosystem": "Ubuntu:25.10"
},
"versions": [
"6.13-1ubuntu1",
"6.13-1ubuntu2",
"6.13-1ubuntu3",
"6.13-1ubuntu4",
"6.13-1ubuntu4.1",
"6.14-0ubuntu0.25.10.1",
"6.14-0ubuntu0.25.10.2"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-50012.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "squid",
"binary_version": "6.14-0ubuntu0.25.10.4"
},
{
"binary_name": "squid-cgi",
"binary_version": "6.14-0ubuntu0.25.10.4"
},
{
"binary_name": "squid-common",
"binary_version": "6.14-0ubuntu0.25.10.4"
},
{
"binary_name": "squid-openssl",
"binary_version": "6.14-0ubuntu0.25.10.4"
},
{
"binary_name": "squid-purge",
"binary_version": "6.14-0ubuntu0.25.10.4"
},
{
"binary_name": "squidclient",
"binary_version": "6.14-0ubuntu0.25.10.4"
}
],
"availability": "No subscription required"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "7.2-2ubuntu2.2"
}
]
}
],
"package": {
"name": "squid",
"purl": "pkg:deb/ubuntu/squid?arch=source&distro=resolute",
"ecosystem": "Ubuntu:26.04:LTS"
},
"versions": [
"6.13-1ubuntu4",
"6.13-1ubuntu5",
"7.2-2ubuntu1",
"7.2-2ubuntu2"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-50012.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "squid",
"binary_version": "7.2-2ubuntu2.2"
},
{
"binary_name": "squid-common",
"binary_version": "7.2-2ubuntu2.2"
},
{
"binary_name": "squid-openssl",
"binary_version": "7.2-2ubuntu2.2"
}
],
"availability": "No subscription required"
}
}
],
"modified": "2026-10-21T23:11:56.374866600Z",
"provider": "osv",
"upstream": [
"CVE-2026-50012"
],
"references": [
"https://ubuntu.com/security/CVE-2026-50012",
"https://www.cve.org/CVERecord?id=CVE-2026-50012",
"https://www.openwall.com/lists/oss-security/2026/06/12/1",
"https://ubuntu.com/security/notices/USN-8435-1",
"https://ubuntu.com/security/notices/USN-8941-1"
]
},
"related_cves": [
{
"value": "CVE-2026-50012",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 401081,
"published_at": "2026-06-12T00:00:00+00:00"
}