USN-8051-1
- Source
- https://ubuntu.com/security/notices/USN-8051-1
- Import Source
- https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8051-1.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/USN-8051-1
- Upstream
- Related
- Published
- 2026-02-18T13:14:15Z
- Modified
- 2026-02-19T20:59:06.099035Z
- Summary
- libssh vulnerabilities
- Details
-
It was discovered that libssh clients incorrectly handled the key exchange process. A remote attacker could possibly use this issue to cause libssh clients to crash, resulting in a denial of service. (CVE-2025-8277)
It was discovered that the libssh SCP client incorrectly sanitized paths received from servers. A remote attacker could use this issue to cause libssh SCP clients to overwrite files outside of the working directory and possibly execute arbitrary code. (CVE-2026-0964)
It was discovered that libssh incorrectly handled parsing configuration files. A local attacker could possibly use this issue to cause libssh to access non-regular files, resulting in a denial of service. (CVE-2026-0965)
It was discovered that libssh incorrectly handled the sshgethexa() function. A remote attacker could possibly use this issue to cause libssh to crash, resulting in a denial of service. (CVE-2026-0966)
It was discovered that libssh incorrectly handled certain regular expressions. A local attacker could possibly use this issue to cause libssh to consume resources, resulting in a denial of service. (CVE-2026-0967)
It was discovered that the libssh SFTP client incorrectly handled certain malformed longname fields. A remote attacker could use this issue to cause libssh SFTP clients to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2026-0968)
- References
Affected packages
Ubuntu:22.04:LTS / libssh
Package
- Name
- libssh
- Purl
- pkg:deb/ubuntu/libssh@0.9.6-2ubuntu0.22.04.6?arch=source&distro=jammy
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed0.9.6-2ubuntu0.22.04.6
Affected versions
0.*
Ecosystem specific
{
"binaries": [
{
"binary_version": "0.9.6-2ubuntu0.22.04.6",
"binary_name": "libssh-4"
},
{
"binary_version": "0.9.6-2ubuntu0.22.04.6",
"binary_name": "libssh-dev"
},
{
"binary_version": "0.9.6-2ubuntu0.22.04.6",
"binary_name": "libssh-gcrypt-4"
},
{
"binary_version": "0.9.6-2ubuntu0.22.04.6",
"binary_name": "libssh-gcrypt-dev"
}
],
"availability": "No subscription required"
}
Database specific
source
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8051-1.json"
cves_map
{
"cves": [
{
"id": "CVE-2025-8277",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L"
},
{
"type": "Ubuntu",
"score": "low"
}
]
},
{
"id": "CVE-2026-0964",
"severity": [
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2026-0965",
"severity": [
{
"type": "Ubuntu",
"score": "low"
}
]
},
{
"id": "CVE-2026-0966",
"severity": [
{
"type": "Ubuntu",
"score": "low"
}
]
},
{
"id": "CVE-2026-0967",
"severity": [
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2026-0968",
"severity": [
{
"type": "Ubuntu",
"score": "medium"
}
]
}
],
"ecosystem": "Ubuntu:22.04:LTS"
}
Ubuntu:24.04:LTS / libssh
Package
- Name
- libssh
- Purl
- pkg:deb/ubuntu/libssh@0.10.6-2ubuntu0.3?arch=source&distro=noble
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed0.10.6-2ubuntu0.3
Affected versions
0.*
Ecosystem specific
{
"binaries": [
{
"binary_version": "0.10.6-2ubuntu0.3",
"binary_name": "libssh-4"
},
{
"binary_version": "0.10.6-2ubuntu0.3",
"binary_name": "libssh-dev"
},
{
"binary_version": "0.10.6-2ubuntu0.3",
"binary_name": "libssh-gcrypt-4"
},
{
"binary_version": "0.10.6-2ubuntu0.3",
"binary_name": "libssh-gcrypt-dev"
}
],
"availability": "No subscription required"
}
Database specific
source
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8051-1.json"
cves_map
{
"cves": [
{
"id": "CVE-2025-8277",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L"
},
{
"type": "Ubuntu",
"score": "low"
}
]
},
{
"id": "CVE-2026-0964",
"severity": [
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2026-0965",
"severity": [
{
"type": "Ubuntu",
"score": "low"
}
]
},
{
"id": "CVE-2026-0966",
"severity": [
{
"type": "Ubuntu",
"score": "low"
}
]
},
{
"id": "CVE-2026-0967",
"severity": [
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2026-0968",
"severity": [
{
"type": "Ubuntu",
"score": "medium"
}
]
}
],
"ecosystem": "Ubuntu:24.04:LTS"
}
Ubuntu:25.10 / libssh
Package
- Name
- libssh
- Purl
- pkg:deb/ubuntu/libssh@0.11.2-1ubuntu0.2?arch=source&distro=questing
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed0.11.2-1ubuntu0.2
Ecosystem specific
{
"binaries": [
{
"binary_version": "0.11.2-1ubuntu0.2",
"binary_name": "libssh-4"
},
{
"binary_version": "0.11.2-1ubuntu0.2",
"binary_name": "libssh-dev"
}
],
"availability": "No subscription required"
}
Database specific
source
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8051-1.json"
cves_map
{
"cves": [
{
"id": "CVE-2025-8277",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L"
},
{
"type": "Ubuntu",
"score": "low"
}
]
},
{
"id": "CVE-2026-0964",
"severity": [
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2026-0965",
"severity": [
{
"type": "Ubuntu",
"score": "low"
}
]
},
{
"id": "CVE-2026-0966",
"severity": [
{
"type": "Ubuntu",
"score": "low"
}
]
},
{
"id": "CVE-2026-0967",
"severity": [
{
"type": "Ubuntu",
"score": "medium"
}
]
},
{
"id": "CVE-2026-0968",
"severity": [
{
"type": "Ubuntu",
"score": "medium"
}
]
}
],
"ecosystem": "Ubuntu:25.10"
}