CVE-2026-0967

MEDIUM

5.5

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.

CVE Details

CVSS v3.1 Score5.5

SeverityMEDIUM

CVSS VectorCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Attack VectorLOCAL

ComplexityLOW

Privileges RequiredNONE

User InteractionREQUIRED

Published3/26/2026

Last Modified4/2/2026

Sourcenvd

Honeypot Sightings0

Affected Products

libssh:libsshredhat:enterprise_linux

Weaknesses (CWE)

CWE-1333

References

https://access.redhat.com/security/cve/CVE-2026-0967(secalert@redhat.com)

https://bugzilla.redhat.com/show_bug.cgi?id=2436981(secalert@redhat.com)

https://www.libssh.org/2026/02/10/libssh-0-12-0-and-0-11-4-security-releases/(secalert@redhat.com)

IOC Correlations

No correlations recorded

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