UnratedFix available
curl — security advisory
Importing a `includeSubDomains` parent HSTS entry before a longer-lived child entry, silently drops the child. Consequently, when the parent expires, the child's valid HSTS policy is lost, causing curl to issue unencrypted HTTP requests rather than upgrading to HTTPS.
- Products
- curl
- Affected versions
- 7.74.0-1.3ubuntu2, 7.74.0-1.3ubuntu3, 7.80.0-3, 7.81.0-1, 7.81.0-1ubuntu1.1, 7.81.0-1ubuntu1.10, 7.81.0-1ubuntu1.11, 7.81.0-1ubuntu1.13, 7.81.0-1ubuntu1.14, 7.81.0-1ubuntu1.15, 7.81.0-1ubuntu1.16, 7.81.0-1ubuntu1.17, 7.81.0-1ubuntu1.18, 7.81.0-1ubuntu1.19, 7.81.0-1ubuntu1.2, 7.81.0-1ubuntu1.20, 7.81.0-1ubuntu1.21, 7.81.0-1ubuntu1.22, 7.81.0-1ubuntu1.23, 7.81.0-1ubuntu1.24, 7.81.0-1ubuntu1.25, 7.81.0-1ubuntu1.26, 7.81.0-1ubuntu1.27, 7.81.0-1ubuntu1.29, 7.81.0-1ubuntu1.3, 7.81.0-1ubuntu1.4, 7.81.0-1ubuntu1.6, 7.81.0-1ubuntu1.7, 7.81.0-1ubuntu1.8, 8.14.1-2ubuntu1, 8.17.0-1ubuntu1, 8.18.0-1ubuntu1, 8.18.0-1ubuntu2, 8.18.0-1ubuntu2.1, 8.18.0-1ubuntu2.2, 8.18.0-1ubuntu2.3, 8.18.0-1ubuntu2.4, 8.18.0-1ubuntu2.5, 8.18.0-1ubuntu2.7, 8.2.1-1ubuntu3, 8.2.1-1ubuntu3.1, 8.20.0-2ubuntu1, 8.20.0-2ubuntu10, 8.20.0-2ubuntu11, 8.20.0-2ubuntu3, 8.4.0-2ubuntu1, 8.5.0-2ubuntu1, 8.5.0-2ubuntu10, 8.5.0-2ubuntu10.1, 8.5.0-2ubuntu10.10, 8.5.0-2ubuntu10.11, 8.5.0-2ubuntu10.12, 8.5.0-2ubuntu10.13, 8.5.0-2ubuntu10.15, 8.5.0-2ubuntu10.2, 8.5.0-2ubuntu10.3, 8.5.0-2ubuntu10.4, 8.5.0-2ubuntu10.5, 8.5.0-2ubuntu10.6, 8.5.0-2ubuntu10.7, 8.5.0-2ubuntu10.8, 8.5.0-2ubuntu10.9, 8.5.0-2ubuntu2, 8.5.0-2ubuntu8, 8.5.0-2ubuntu9
- Fixed versions
- 7.81.0-1ubuntu1.30, 8.18.0-1ubuntu2.8, 8.20.0-2ubuntu11.1, 8.5.0-2ubuntu10.16
- CVEs
- CVE-2026-87862
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 13:26 UTC · Revision 1
Source evidence
Importing a `includeSubDomains` parent HSTS entry before a longer-lived child entry, silently drops the child. Consequently, when the parent expires, the child's valid HSTS policy is lost, causing curl to issue unencrypted HTTP requests rather than upgrading to HTTPS.
osv:UBUNTU-CVE-2026-87862
curl
Fixed versions: 7.81.0-1ubuntu1.30
curl
Fixed versions: 8.5.0-2ubuntu10.16
curl
Fixed versions: 8.20.0-2ubuntu11.1
curl
Fixed versions: 8.18.0-1ubuntu2.8
Complete source record
{
"id": "4e534e23bb45d930e1b7d5943349b056231860501f9b5b781b0aadc36ef09e9c",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-87862",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2026-87862",
"summary": "Importing a `includeSubDomains` parent HSTS entry before a longer-lived child entry, silently drops the child. Consequently, when the parent expires, the child's valid HSTS policy is lost, causing curl to issue unencrypted HTTP requests rather than upgrading to HTTPS.",
"evidence": "osv:UBUNTU-CVE-2026-87862",
"products": [
{
"name": {
"value": "curl",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "7.81.0-1ubuntu1.30",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": [
{
"value": "7.74.0-1.3ubuntu2",
"evidence": "/affected/0/versions"
},
{
"value": "7.74.0-1.3ubuntu3",
"evidence": "/affected/0/versions"
},
{
"value": "7.80.0-3",
"evidence": "/affected/0/versions"
},
{
"value": "7.81.0-1",
"evidence": "/affected/0/versions"
},
{
"value": "7.81.0-1ubuntu1.1",
"evidence": "/affected/0/versions"
},
{
"value": "7.81.0-1ubuntu1.2",
"evidence": "/affected/0/versions"
},
{
"value": "7.81.0-1ubuntu1.3",
"evidence": "/affected/0/versions"
},
{
"value": "7.81.0-1ubuntu1.4",
"evidence": "/affected/0/versions"
},
{
"value": "7.81.0-1ubuntu1.6",
"evidence": "/affected/0/versions"
},
{
"value": "7.81.0-1ubuntu1.7",
"evidence": "/affected/0/versions"
},
{
"value": "7.81.0-1ubuntu1.8",
"evidence": "/affected/0/versions"
},
{
"value": "7.81.0-1ubuntu1.10",
"evidence": "/affected/0/versions"
},
{
"value": "7.81.0-1ubuntu1.11",
"evidence": "/affected/0/versions"
},
{
"value": "7.81.0-1ubuntu1.13",
"evidence": "/affected/0/versions"
},
{
"value": "7.81.0-1ubuntu1.14",
"evidence": "/affected/0/versions"
},
{
"value": "7.81.0-1ubuntu1.15",
"evidence": "/affected/0/versions"
},
{
"value": "7.81.0-1ubuntu1.16",
"evidence": "/affected/0/versions"
},
{
"value": "7.81.0-1ubuntu1.17",
"evidence": "/affected/0/versions"
},
{
"value": "7.81.0-1ubuntu1.18",
"evidence": "/affected/0/versions"
},
{
"value": "7.81.0-1ubuntu1.19",
"evidence": "/affected/0/versions"
},
{
"value": "7.81.0-1ubuntu1.20",
"evidence": "/affected/0/versions"
},
{
"value": "7.81.0-1ubuntu1.21",
"evidence": "/affected/0/versions"
},
{
"value": "7.81.0-1ubuntu1.22",
"evidence": "/affected/0/versions"
},
{
"value": "7.81.0-1ubuntu1.23",
"evidence": "/affected/0/versions"
},
{
"value": "7.81.0-1ubuntu1.24",
"evidence": "/affected/0/versions"
},
{
"value": "7.81.0-1ubuntu1.25",
"evidence": "/affected/0/versions"
},
{
"value": "7.81.0-1ubuntu1.26",
"evidence": "/affected/0/versions"
},
{
"value": "7.81.0-1ubuntu1.27",
"evidence": "/affected/0/versions"
},
{
"value": "7.81.0-1ubuntu1.29",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "curl",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "8.5.0-2ubuntu10.16",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": [
{
"value": "8.2.1-1ubuntu3",
"evidence": "/affected/1/versions"
},
{
"value": "8.2.1-1ubuntu3.1",
"evidence": "/affected/1/versions"
},
{
"value": "8.4.0-2ubuntu1",
"evidence": "/affected/1/versions"
},
{
"value": "8.5.0-2ubuntu1",
"evidence": "/affected/1/versions"
},
{
"value": "8.5.0-2ubuntu2",
"evidence": "/affected/1/versions"
},
{
"value": "8.5.0-2ubuntu8",
"evidence": "/affected/1/versions"
},
{
"value": "8.5.0-2ubuntu9",
"evidence": "/affected/1/versions"
},
{
"value": "8.5.0-2ubuntu10",
"evidence": "/affected/1/versions"
},
{
"value": "8.5.0-2ubuntu10.1",
"evidence": "/affected/1/versions"
},
{
"value": "8.5.0-2ubuntu10.2",
"evidence": "/affected/1/versions"
},
{
"value": "8.5.0-2ubuntu10.3",
"evidence": "/affected/1/versions"
},
{
"value": "8.5.0-2ubuntu10.4",
"evidence": "/affected/1/versions"
},
{
"value": "8.5.0-2ubuntu10.5",
"evidence": "/affected/1/versions"
},
{
"value": "8.5.0-2ubuntu10.6",
"evidence": "/affected/1/versions"
},
{
"value": "8.5.0-2ubuntu10.7",
"evidence": "/affected/1/versions"
},
{
"value": "8.5.0-2ubuntu10.8",
"evidence": "/affected/1/versions"
},
{
"value": "8.5.0-2ubuntu10.9",
"evidence": "/affected/1/versions"
},
{
"value": "8.5.0-2ubuntu10.10",
"evidence": "/affected/1/versions"
},
{
"value": "8.5.0-2ubuntu10.11",
"evidence": "/affected/1/versions"
},
{
"value": "8.5.0-2ubuntu10.12",
"evidence": "/affected/1/versions"
},
{
"value": "8.5.0-2ubuntu10.13",
"evidence": "/affected/1/versions"
},
{
"value": "8.5.0-2ubuntu10.15",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "curl",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "8.20.0-2ubuntu11.1",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": [
{
"value": "8.18.0-1ubuntu2",
"evidence": "/affected/2/versions"
},
{
"value": "8.20.0-2ubuntu1",
"evidence": "/affected/2/versions"
},
{
"value": "8.20.0-2ubuntu3",
"evidence": "/affected/2/versions"
},
{
"value": "8.20.0-2ubuntu10",
"evidence": "/affected/2/versions"
},
{
"value": "8.20.0-2ubuntu11",
"evidence": "/affected/2/versions"
}
]
},
{
"name": {
"value": "curl",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "8.18.0-1ubuntu2.8",
"evidence": "/affected/3/ranges"
}
],
"affected_versions": [
{
"value": "8.14.1-2ubuntu1",
"evidence": "/affected/3/versions"
},
{
"value": "8.17.0-1ubuntu1",
"evidence": "/affected/3/versions"
},
{
"value": "8.18.0-1ubuntu1",
"evidence": "/affected/3/versions"
},
{
"value": "8.18.0-1ubuntu2",
"evidence": "/affected/3/versions"
},
{
"value": "8.18.0-1ubuntu2.1",
"evidence": "/affected/3/versions"
},
{
"value": "8.18.0-1ubuntu2.2",
"evidence": "/affected/3/versions"
},
{
"value": "8.18.0-1ubuntu2.3",
"evidence": "/affected/3/versions"
},
{
"value": "8.18.0-1ubuntu2.4",
"evidence": "/affected/3/versions"
},
{
"value": "8.18.0-1ubuntu2.5",
"evidence": "/affected/3/versions"
},
{
"value": "8.18.0-1ubuntu2.7",
"evidence": "/affected/3/versions"
}
]
}
],
"severity": "unknown",
"structured": {
"id": "UBUNTU-CVE-2026-87862",
"aliases": [
"UBUNTU-CVE-2026-87862"
],
"metrics": [
{
"type": "Ubuntu",
"score": "low"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "7.81.0-1ubuntu1.30"
}
]
}
],
"package": {
"name": "curl",
"purl": "pkg:deb/ubuntu/curl?arch=source&distro=jammy",
"ecosystem": "Ubuntu:22.04:LTS"
},
"versions": [
"7.74.0-1.3ubuntu2",
"7.74.0-1.3ubuntu3",
"7.80.0-3",
"7.81.0-1",
"7.81.0-1ubuntu1.1",
"7.81.0-1ubuntu1.2",
"7.81.0-1ubuntu1.3",
"7.81.0-1ubuntu1.4",
"7.81.0-1ubuntu1.6",
"7.81.0-1ubuntu1.7",
"7.81.0-1ubuntu1.8",
"7.81.0-1ubuntu1.10",
"7.81.0-1ubuntu1.11",
"7.81.0-1ubuntu1.13",
"7.81.0-1ubuntu1.14",
"7.81.0-1ubuntu1.15",
"7.81.0-1ubuntu1.16",
"7.81.0-1ubuntu1.17",
"7.81.0-1ubuntu1.18",
"7.81.0-1ubuntu1.19",
"7.81.0-1ubuntu1.20",
"7.81.0-1ubuntu1.21",
"7.81.0-1ubuntu1.22",
"7.81.0-1ubuntu1.23",
"7.81.0-1ubuntu1.24",
"7.81.0-1ubuntu1.25",
"7.81.0-1ubuntu1.26",
"7.81.0-1ubuntu1.27",
"7.81.0-1ubuntu1.29"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-87862.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "curl",
"binary_version": "7.81.0-1ubuntu1.30"
},
{
"binary_name": "libcurl3-gnutls",
"binary_version": "7.81.0-1ubuntu1.30"
},
{
"binary_name": "libcurl3-nss",
"binary_version": "7.81.0-1ubuntu1.30"
},
{
"binary_name": "libcurl4",
"binary_version": "7.81.0-1ubuntu1.30"
}
],
"availability": "No subscription required",
"priority_reason": "Upstream defined this as low severity"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "8.5.0-2ubuntu10.16"
}
]
}
],
"package": {
"name": "curl",
"purl": "pkg:deb/ubuntu/curl?arch=source&distro=noble",
"ecosystem": "Ubuntu:24.04:LTS"
},
"versions": [
"8.2.1-1ubuntu3",
"8.2.1-1ubuntu3.1",
"8.4.0-2ubuntu1",
"8.5.0-2ubuntu1",
"8.5.0-2ubuntu2",
"8.5.0-2ubuntu8",
"8.5.0-2ubuntu9",
"8.5.0-2ubuntu10",
"8.5.0-2ubuntu10.1",
"8.5.0-2ubuntu10.2",
"8.5.0-2ubuntu10.3",
"8.5.0-2ubuntu10.4",
"8.5.0-2ubuntu10.5",
"8.5.0-2ubuntu10.6",
"8.5.0-2ubuntu10.7",
"8.5.0-2ubuntu10.8",
"8.5.0-2ubuntu10.9",
"8.5.0-2ubuntu10.10",
"8.5.0-2ubuntu10.11",
"8.5.0-2ubuntu10.12",
"8.5.0-2ubuntu10.13",
"8.5.0-2ubuntu10.15"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-87862.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "curl",
"binary_version": "8.5.0-2ubuntu10.16"
},
{
"binary_name": "libcurl3t64-gnutls",
"binary_version": "8.5.0-2ubuntu10.16"
},
{
"binary_name": "libcurl4t64",
"binary_version": "8.5.0-2ubuntu10.16"
}
],
"availability": "No subscription required",
"priority_reason": "Upstream defined this as low severity"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "8.20.0-2ubuntu11.1"
}
]
}
],
"package": {
"name": "curl",
"purl": "pkg:deb/ubuntu/curl?arch=source&distro=stonking",
"ecosystem": "Ubuntu:26.10"
},
"versions": [
"8.18.0-1ubuntu2",
"8.20.0-2ubuntu1",
"8.20.0-2ubuntu3",
"8.20.0-2ubuntu10",
"8.20.0-2ubuntu11"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-87862.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "curl",
"binary_version": "8.20.0-2ubuntu11.1"
},
{
"binary_name": "libcurl3t64-gnutls",
"binary_version": "8.20.0-2ubuntu11.1"
},
{
"binary_name": "libcurl4t64",
"binary_version": "8.20.0-2ubuntu11.1"
}
],
"availability": "No subscription required",
"priority_reason": "Upstream defined this as low severity"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "8.18.0-1ubuntu2.8"
}
]
}
],
"package": {
"name": "curl",
"purl": "pkg:deb/ubuntu/curl?arch=source&distro=resolute",
"ecosystem": "Ubuntu:26.04:LTS"
},
"versions": [
"8.14.1-2ubuntu1",
"8.17.0-1ubuntu1",
"8.18.0-1ubuntu1",
"8.18.0-1ubuntu2",
"8.18.0-1ubuntu2.1",
"8.18.0-1ubuntu2.2",
"8.18.0-1ubuntu2.3",
"8.18.0-1ubuntu2.4",
"8.18.0-1ubuntu2.5",
"8.18.0-1ubuntu2.7"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-87862.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "curl",
"binary_version": "8.18.0-1ubuntu2.8"
},
{
"binary_name": "libcurl3t64-gnutls",
"binary_version": "8.18.0-1ubuntu2.8"
},
{
"binary_name": "libcurl4t64",
"binary_version": "8.18.0-1ubuntu2.8"
}
],
"availability": "No subscription required",
"priority_reason": "Upstream defined this as low severity"
}
}
],
"modified": "2026-10-20T22:56:55.837620383Z",
"provider": "osv",
"upstream": [
"CVE-2026-87862"
],
"references": [
"https://ubuntu.com/security/CVE-2026-87862",
"https://www.cve.org/CVERecord?id=CVE-2026-87862",
"https://curl.se/docs/CVE-2026-87862.html",
"https://ubuntu.com/security/notices/USN-8927-1",
"https://ubuntu.com/security/notices/USN-8927-2",
"https://ubuntu.com/security/notices/USN-8932-1"
]
},
"related_cves": [
{
"value": "CVE-2026-87862",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 390730,
"published_at": "2026-10-14T06:00:00+00:00"
}