CVE-2026-0967
MEDIUM
MEDIUM
Priority: 0.01
BB Relevance:
36/100
Published: 2026-03-26
Modified: 2026-11-06
First seen: 2026-11-06
Status: active
Attack Surface
Low Complexity
No Auth
CVSS Vector Breakdown
AV:
Local
AC:
Low
PR:
None
UI:
Required
S:
Unchanged
C:
None
I:
None
A:
High
Description
A flaw was found in libssh. A remote attacker, by controlling client configuration files or known_hosts files, could craft specific hostnames that when processed by the `match_pattern()` function can lead to inefficient regular expression backtracking. This can cause timeouts and resource exhaustion, resulting in a Denial of Service (DoS) for the client.
Weakness Classification (1)
Affected Software (3)
| Vendor | Product | Version |
|---|---|---|
| libssh | libssh | < 0.11.3 |
| redhat | enterprise_linux | 9.0 |
| redhat | enterprise_linux | 10.0 |
References & Advisories (5)
vendor-advisory
x_refsource_REDHAT
vendor-advisory
x_refsource_REDHAT
vdb-entry
x_refsource_REDHAT
issue-tracking
x_refsource_REDHAT