DEBIAN-CVE-2026-59851
A flaw was found in libssh. On servers with GSSAPIKeyExchange enabled, the gssapi-keyex path does not verify whether the authenticated Kerberos principal is authorized for the requested local user, allowing authenticated clients to log in as arbitrary users.
DEBIAN-CVE-2026-59851
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:DEBIAN-CVE-2026-59851
libssh
Source reference: /affected/0/package/name
- Affected versions
- 0.11.2-1
Source reference:
/affected/0/versions0.11.3-1Source reference:
/affected/0/versions0.12.0-1Source reference:
/affected/0/versions0.12.0-2Source reference:
/affected/0/versions0.12.0-3Source reference:
/affected/0/versions - Fixed versions
- 0.12.1-1
Source reference:
/affected/0/ranges - Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "0.12.1-1"
}
]
}
],
"package": {
"name": "libssh",
"purl": "pkg:deb/debian/libssh?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"0.11.2-1",
"0.11.3-1",
"0.12.0-1",
"0.12.0-2",
"0.12.0-3"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-59851.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #56039 · Revision 1
- Added to Heist Feed
- Publisher date