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CVE-2026-0967 Details

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.

Metrics

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://access.redhat.com/errata/RHSA-2026:18160 [email protected]
https://access.redhat.com/errata/RHSA-2026:18683 [email protected]
https://access.redhat.com/security/cve/CVE-2026-0967 [email protected]Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2436981 [email protected]Third Party Advisory
https://www.libssh.org/2026/02/10/libssh-0-12-0-and-0-11-4-security-releases/ [email protected]Release Notes

Weakness Enumeration

CWE-IDCWE NameSource
CWE-1333Inefficient Regular Expression Complexity[email protected]

Affected Products

ProductVersions
libssh libssh
<= 0.11.3

CPE

  • cpe:2.3:a:libssh:libssh:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.
redhat enterprise linux
9.0
10.0

CPE

  • cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*
  • cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

10 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-0967
NVD Published Date:
Mar 26, 2026
NVD Last Modified:
Sep 1, 2026
Source:
[email protected]
CVE-2026-0967 Details - Not Deferred