UnratedFix available
openssh vulnerabilities
Type: advisorySources: OSV
It was discovered that OpenSSH's sftp client incorrectly handled paths returned by the server during a recursive copy operation. A remote attacker controlling the server could possibly use this issue to write files to unintended locations. (CVE-2026-106552) It was discovered that OpenSSH's sshd server incorrectly handled GSSAPIAuthentication state across authentication attempts. An attacker could possibly use this issue to obtain credentials from a previous failed authentication attempt. (CVE-2026-106553, CVE-2026-106555) It was discovered that OpenSSH incorrectly used an LZ77 dictionary coder during compression. An attacker could possibly use this issue to obtain sensitive information. (CVE-2026-106582) It was discovered that OpenSSH's ssh client incorrectly allowed special characters in command-line usernames. An attacker could possibly use this issue to inject arbitrary commands via specially crafted usernames. (CVE-2026-106583) It was discovered that OpenSSH's ssh-keygen incorrectly handled Daylight Saving Time when converting dates. An attacker could possibly use this issue to cause certificates to have incorrect expiration times. (CVE-2026-106584) It was discovered that OpenSSH did not check whether the maximum packet length was exceeded during decompression. A remote attacker could possibly use this issue to cause a denial of service. (CVE-2026-106585) It was discovered that OpenSSH's sshd server incorrectly applied the restrict keyword from authorized_keys to tunnel f
- Products
- openssh
- Affected versions
- 1:10.0p1-5ubuntu5, 1:10.2p1-2ubuntu1, 1:10.2p1-2ubuntu3, 1:10.2p1-2ubuntu3.2, 1:10.2p1-2ubuntu3.4, 1:10.2p1-2ubuntu3.5, 1:10.2p1-2ubuntu3.6, 1:10.2p1-2ubuntu3.7, 1:8.4p1-6ubuntu2, 1:8.7p1-2, 1:8.7p1-2build1, 1:8.7p1-4, 1:8.8p1-1, 1:8.9p1-3, 1:8.9p1-3ubuntu0.1, 1:8.9p1-3ubuntu0.10, 1:8.9p1-3ubuntu0.11, 1:8.9p1-3ubuntu0.13, 1:8.9p1-3ubuntu0.14, 1:8.9p1-3ubuntu0.15, 1:8.9p1-3ubuntu0.16, 1:8.9p1-3ubuntu0.17, 1:8.9p1-3ubuntu0.3, 1:8.9p1-3ubuntu0.4, 1:8.9p1-3ubuntu0.5, 1:8.9p1-3ubuntu0.6, 1:8.9p1-3ubuntu0.7, 1:9.3p1-1ubuntu3, 1:9.4p1-1ubuntu1, 1:9.6p1-3ubuntu1, 1:9.6p1-3ubuntu11, 1:9.6p1-3ubuntu12, 1:9.6p1-3ubuntu13, 1:9.6p1-3ubuntu13.11, 1:9.6p1-3ubuntu13.12, 1:9.6p1-3ubuntu13.13, 1:9.6p1-3ubuntu13.14, 1:9.6p1-3ubuntu13.15, 1:9.6p1-3ubuntu13.16, 1:9.6p1-3ubuntu13.18, 1:9.6p1-3ubuntu13.19, 1:9.6p1-3ubuntu13.3, 1:9.6p1-3ubuntu13.4, 1:9.6p1-3ubuntu13.5, 1:9.6p1-3ubuntu13.7, 1:9.6p1-3ubuntu13.8, 1:9.6p1-3ubuntu13.9, 1:9.6p1-3ubuntu2
- Fixed versions
- 1:10.2p1-2ubuntu3.8, 1:8.9p1-3ubuntu0.18, 1:9.6p1-3ubuntu13.20
- CVEs
- CVE-2026-106552, CVE-2026-106553, CVE-2026-106555, CVE-2026-106582, CVE-2026-106583, CVE-2026-106584, CVE-2026-106585, CVE-2026-106586, CVE-2026-106587
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 03:36 UTC · Revision 1
Source evidence
It was discovered that OpenSSH's sftp client incorrectly handled paths returned by the server during a recursive copy operation. A remote attacker controlling the server could possibly use this issue to write files to unintended locations. (CVE-2026-106552) It was discovered that OpenSSH's sshd server incorrectly handled GSSAPIAuthentication state across authentication attempts. An attacker could possibly use this issue to obtain credentials from a previous failed authentication attempt. (CVE-2026-106553, CVE-2026-106555) It was discovered that OpenSSH incorrectly used an LZ77 dictionary coder during compression. An attacker could possibly use this issue to obtain sensitive information. (CVE-2026-106582) It was discovered that OpenSSH's ssh client incorrectly allowed special characters in command-line usernames. An attacker could possibly use this issue to inject arbitrary commands via specially crafted usernames. (CVE-2026-106583) It was discovered that OpenSSH's ssh-keygen incorrectly handled Daylight Saving Time when converting dates. An attacker could possibly use this issue to cause certificates to have incorrect expiration times. (CVE-2026-106584) It was discovered that OpenSSH did not check whether the maximum packet length was exceeded during decompression. A remote attacker could possibly use this issue to cause a denial of service. (CVE-2026-106585) It was discovered that OpenSSH's sshd server incorrectly applied the restrict keyword from authorized_keys to tunnel f
osv:USN-8928-1
openssh
Fixed versions: 1:8.9p1-3ubuntu0.18
openssh
Fixed versions: 1:9.6p1-3ubuntu13.20
openssh
Fixed versions: 1:10.2p1-2ubuntu3.8
Complete source record
{
"id": "5229d6542c19d102b98932cfc249d386fd8debe5974347a859f33855bd09f422",
"url": "https://osv.dev/vulnerability/USN-8928-1",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "openssh vulnerabilities",
"summary": "It was discovered that OpenSSH's sftp client incorrectly handled paths returned by the server during a recursive copy operation. A remote attacker controlling the server could possibly use this issue to write files to unintended locations. (CVE-2026-106552) It was discovered that OpenSSH's sshd server incorrectly handled GSSAPIAuthentication state across authentication attempts. An attacker could possibly use this issue to obtain credentials from a previous failed authentication attempt. (CVE-2026-106553, CVE-2026-106555) It was discovered that OpenSSH incorrectly used an LZ77 dictionary coder during compression. An attacker could possibly use this issue to obtain sensitive information. (CVE-2026-106582) It was discovered that OpenSSH's ssh client incorrectly allowed special characters in command-line usernames. An attacker could possibly use this issue to inject arbitrary commands via specially crafted usernames. (CVE-2026-106583) It was discovered that OpenSSH's ssh-keygen incorrectly handled Daylight Saving Time when converting dates. An attacker could possibly use this issue to cause certificates to have incorrect expiration times. (CVE-2026-106584) It was discovered that OpenSSH did not check whether the maximum packet length was exceeded during decompression. A remote attacker could possibly use this issue to cause a denial of service. (CVE-2026-106585) It was discovered that OpenSSH's sshd server incorrectly applied the restrict keyword from authorized_keys to tunnel f",
"evidence": "osv:USN-8928-1",
"products": [
{
"name": {
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},
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{
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{
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"evidence": "/affected/0/versions"
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
"value": "1:8.9p1-3ubuntu0.14",
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{
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{
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{
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{
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{
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{
"value": "1:9.4p1-1ubuntu1",
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{
"value": "1:9.6p1-3ubuntu1",
"evidence": "/affected/1/versions"
},
{
"value": "1:9.6p1-3ubuntu2",
"evidence": "/affected/1/versions"
},
{
"value": "1:9.6p1-3ubuntu11",
"evidence": "/affected/1/versions"
},
{
"value": "1:9.6p1-3ubuntu12",
"evidence": "/affected/1/versions"
},
{
"value": "1:9.6p1-3ubuntu13",
"evidence": "/affected/1/versions"
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{
"value": "1:9.6p1-3ubuntu13.3",
"evidence": "/affected/1/versions"
},
{
"value": "1:9.6p1-3ubuntu13.4",
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{
"value": "1:9.6p1-3ubuntu13.5",
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{
"value": "1:9.6p1-3ubuntu13.7",
"evidence": "/affected/1/versions"
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{
"value": "1:9.6p1-3ubuntu13.8",
"evidence": "/affected/1/versions"
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{
"value": "1:9.6p1-3ubuntu13.9",
"evidence": "/affected/1/versions"
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{
"value": "1:9.6p1-3ubuntu13.11",
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{
"value": "1:9.6p1-3ubuntu13.12",
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{
"value": "1:9.6p1-3ubuntu13.13",
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{
"value": "1:9.6p1-3ubuntu13.14",
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},
{
"value": "1:9.6p1-3ubuntu13.15",
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},
{
"value": "1:9.6p1-3ubuntu13.16",
"evidence": "/affected/1/versions"
},
{
"value": "1:9.6p1-3ubuntu13.18",
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{
"value": "1:9.6p1-3ubuntu13.19",
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},
{
"name": {
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"evidence": "/affected/2/package/name"
},
"prerequisites": [],
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{
"value": "1:10.2p1-2ubuntu3.8",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": [
{
"value": "1:10.0p1-5ubuntu5",
"evidence": "/affected/2/versions"
},
{
"value": "1:10.2p1-2ubuntu1",
"evidence": "/affected/2/versions"
},
{
"value": "1:10.2p1-2ubuntu3",
"evidence": "/affected/2/versions"
},
{
"value": "1:10.2p1-2ubuntu3.2",
"evidence": "/affected/2/versions"
},
{
"value": "1:10.2p1-2ubuntu3.4",
"evidence": "/affected/2/versions"
},
{
"value": "1:10.2p1-2ubuntu3.5",
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{
"value": "1:10.2p1-2ubuntu3.6",
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{
"value": "1:10.2p1-2ubuntu3.7",
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]
}
],
"severity": "unknown",
"structured": {
"id": "USN-8928-1",
"aliases": [
"USN-8928-1"
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
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{
"introduced": "0"
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{
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]
}
],
"package": {
"name": "openssh",
"purl": "pkg:deb/ubuntu/openssh?arch=source&distro=jammy",
"ecosystem": "Ubuntu:22.04:LTS"
},
"versions": [
"1:8.4p1-6ubuntu2",
"1:8.7p1-2",
"1:8.7p1-2build1",
"1:8.7p1-4",
"1:8.8p1-1",
"1:8.9p1-3",
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"1:8.9p1-3ubuntu0.4",
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"1:8.9p1-3ubuntu0.15",
"1:8.9p1-3ubuntu0.16",
"1:8.9p1-3ubuntu0.17"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8928-1.json",
"cves_map": {
"cves": [
{
"id": "CVE-2026-106552",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:L"
},
{
"type": "CVSS_V3",
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},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2026-106553",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:N"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2026-106555",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:N"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2026-106582",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2026-106583",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2026-106584",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2026-106585",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2026-106586",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2026-106587",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
}
],
"ecosystem": "Ubuntu:22.04:LTS"
}
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "openssh-client",
"binary_version": "1:8.9p1-3ubuntu0.18"
},
{
"binary_name": "openssh-server",
"binary_version": "1:8.9p1-3ubuntu0.18"
},
{
"binary_name": "openssh-sftp-server",
"binary_version": "1:8.9p1-3ubuntu0.18"
},
{
"binary_name": "openssh-tests",
"binary_version": "1:8.9p1-3ubuntu0.18"
},
{
"binary_name": "ssh",
"binary_version": "1:8.9p1-3ubuntu0.18"
},
{
"binary_name": "ssh-askpass-gnome",
"binary_version": "1:8.9p1-3ubuntu0.18"
}
],
"availability": "No subscription required"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1:9.6p1-3ubuntu13.20"
}
]
}
],
"package": {
"name": "openssh",
"purl": "pkg:deb/ubuntu/openssh?arch=source&distro=noble",
"ecosystem": "Ubuntu:24.04:LTS"
},
"versions": [
"1:9.3p1-1ubuntu3",
"1:9.4p1-1ubuntu1",
"1:9.6p1-3ubuntu1",
"1:9.6p1-3ubuntu2",
"1:9.6p1-3ubuntu11",
"1:9.6p1-3ubuntu12",
"1:9.6p1-3ubuntu13",
"1:9.6p1-3ubuntu13.3",
"1:9.6p1-3ubuntu13.4",
"1:9.6p1-3ubuntu13.5",
"1:9.6p1-3ubuntu13.7",
"1:9.6p1-3ubuntu13.8",
"1:9.6p1-3ubuntu13.9",
"1:9.6p1-3ubuntu13.11",
"1:9.6p1-3ubuntu13.12",
"1:9.6p1-3ubuntu13.13",
"1:9.6p1-3ubuntu13.14",
"1:9.6p1-3ubuntu13.15",
"1:9.6p1-3ubuntu13.16",
"1:9.6p1-3ubuntu13.18",
"1:9.6p1-3ubuntu13.19"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8928-1.json",
"cves_map": {
"cves": [
{
"id": "CVE-2026-106552",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:L"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2026-106553",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:N"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2026-106555",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:N"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2026-106582",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2026-106583",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2026-106584",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2026-106585",
"severity": [
{
"type": "CVSS_V3",
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{
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{
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},
{
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]
},
{
"id": "CVE-2026-106587",
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{
"type": "CVSS_V3",
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{
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{
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],
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"id": "CVE-2026-106552",
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"type": "CVSS_V3",
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},
{
"type": "CVSS_V3",
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},
{
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]
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{
"id": "CVE-2026-106555",
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{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:N"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"
},
{
"type": "Ubuntu",
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}
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},
{
"id": "CVE-2026-106582",
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{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N"
},
{
"type": "Ubuntu",
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}
]
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{
"id": "CVE-2026-106583",
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{
"type": "CVSS_V3",
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},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
},
{
"type": "Ubuntu",
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{
"id": "CVE-2026-106584",
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{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2026-106585",
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{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L"
},
{
"type": "Ubuntu",
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}
]
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{
"id": "CVE-2026-106586",
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{
"type": "CVSS_V3",
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},
{
"type": "CVSS_V3",
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},
{
"type": "Ubuntu",
"score": "medium"
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{
"id": "CVE-2026-106587",
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{
"type": "CVSS_V3",
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},
{
"type": "CVSS_V3",
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},
{
"type": "Ubuntu",
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}
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{
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],
"modified": "2026-10-17T13:11:54.038235995Z",
"provider": "osv",
"upstream": [
"CVE-2026-106552",
"CVE-2026-106553",
"CVE-2026-106555",
"CVE-2026-106582",
"CVE-2026-106583",
"CVE-2026-106584",
"CVE-2026-106585",
"CVE-2026-106586",
"CVE-2026-106587",
"UBUNTU-CVE-2026-106552",
"UBUNTU-CVE-2026-106553",
"UBUNTU-CVE-2026-106555",
"UBUNTU-CVE-2026-106582",
"UBUNTU-CVE-2026-106583",
"UBUNTU-CVE-2026-106584",
"UBUNTU-CVE-2026-106585",
"UBUNTU-CVE-2026-106586",
"UBUNTU-CVE-2026-106587"
],
"references": [
"https://ubuntu.com/security/notices/USN-8928-1",
"https://ubuntu.com/security/CVE-2026-106552",
"https://ubuntu.com/security/CVE-2026-106553",
"https://ubuntu.com/security/CVE-2026-106555",
"https://ubuntu.com/security/CVE-2026-106582",
"https://ubuntu.com/security/CVE-2026-106583",
"https://ubuntu.com/security/CVE-2026-106584",
"https://ubuntu.com/security/CVE-2026-106585",
"https://ubuntu.com/security/CVE-2026-106586",
"https://ubuntu.com/security/CVE-2026-106587"
]
},
"related_cves": [
{
"value": "CVE-2026-106552",
"evidence": "/upstream"
},
{
"value": "CVE-2026-106553",
"evidence": "/upstream"
},
{
"value": "CVE-2026-106555",
"evidence": "/upstream"
},
{
"value": "CVE-2026-106582",
"evidence": "/upstream"
},
{
"value": "CVE-2026-106583",
"evidence": "/upstream"
},
{
"value": "CVE-2026-106584",
"evidence": "/upstream"
},
{
"value": "CVE-2026-106585",
"evidence": "/upstream"
},
{
"value": "CVE-2026-106586",
"evidence": "/upstream"
},
{
"value": "CVE-2026-106587",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 361842,
"published_at": "2026-10-14T12:13:18+00:00"
}