high8.2
CVE-2026-0966
A flaw was found in libssh.
Impact
A flaw was found in libssh. The API function `ssh_get_hexa()` is vulnerable to a denial of service when processing zero-length input. This can be exploited remotely by an attacker during GSSAPI (Generic Security Service Application Program Interface) authentication if the server's logging verbosity is set to `SSH_LOG_PACKET (3)` or higher. Successful exploitation could lead to a self-Denial of Service of the per-connection daemon process.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Libssh | Libssh | before 0.11.4 |
| Redhat | Hardened Images | All versions |
| Redhat | Openshift Container Platform | Version 4.0 |
| Redhat | Enterprise Linux | Versions 8.0, 9.0, 10.0 |
Weakness classification
References
- NVD record
- CVE.org record
- https://access.redhat.com/errata/RHSA-2026:18160
- https://access.redhat.com/errata/RHSA-2026:18683
- https://access.redhat.com/errata/RHSA-2026:7067
- https://access.redhat.com/security/cve/CVE-2026-0966
- https://bugzilla.redhat.com/show_bug.cgi?id=2433121
- https://www.libssh.org/2026/02/10/libssh-0-12-0-and-0-11-4-security-releases/