Input validation error in libssh - CVE-2026-0967
Published: February 24, 2026
Vulnerability identifier: #VU123155
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-0967
CWE-ID: CWE-20
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: libssh
Affected software:
libssh
libssh
Detailed vulnerability description
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input within the match_pattern() function when comparing configuration files or known hosts against the hostname. A local user with ability to modify the configuration file or known_hosts file can crash the application.
How to mitigate CVE-2026-0967
Install updates from vendor's website.