CVE-2026-0967

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

26/03/2026

Last modified:

02/04/2026

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.

Impact

Vector 3.x

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 5.50 MEDIUM
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x

5.50

Severity 3.x

MEDIUM

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:libssh:libssh::::::::		0.11.3 (including)
cpe:2.3:o:redhat:enterprise_linux:9.0:::::::*
cpe:2.3:o:redhat:enterprise_linux:10.0:::::::*

To consult the complete list of CPE names with products and versions, see this page

CVE-2026-0967

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools