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Vulnerability · Published Mar 26, 2026 · Assigned by redhat

CVE-2026-0965Libssh: libssh: denial of service via improper configuration file handling

Low 3.3

In plain English

A low-severity security flaw in Red Hat Enterprise Linux 10 from Red Hat. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 6% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.0)3.3Low
Exploit odds (30 days)0.2%top 94.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

A flaw was found in libssh where it can attempt to open arbitrary files during configuration parsing. A local attacker can exploit this by providing a malicious configuration file or when the system is misconfigured. This vulnerability could lead to a Denial of Service (DoS) by causing the system to try and access dangerous files, such as block devices or large system files, which can disrupt normal operations.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
AlmaLinux:10libssh0.12.0-2.el10ALSA-2026:18160
AlmaLinux:9libssh0.10.4-18.el9ALSA-2026:18683
AlmaLinux:10libssh-config0.12.0-2.el10ALSA-2026:18160
AlmaLinux:9libssh-config0.10.4-18.el9ALSA-2026:18683
AlmaLinux:10libssh-devel0.12.0-2.el10ALSA-2026:18160
AlmaLinux:9libssh-devel0.10.4-18.el9ALSA-2026:18683
Alpine:v3.23libssh0.11.4-r0ALPINE-CVE-2026-0965
Alpine:v3.24libssh0.12.0-r0ALPINE-CVE-2026-0965
Debian:12libssh0.10.6-0+deb12u3DEBIAN-CVE-2026-0965
Debian:13libssh0.11.5-0+deb13u1DEBIAN-CVE-2026-0965
Debian:14libssh0.12.0-1DEBIAN-CVE-2026-0965
Rocky Linux:10libssh0:0.12.0-2.el10RLSA-2026:18160
Rocky Linux:9libssh0:0.10.4-18.el9RLSA-2026:18683
Ubuntu:22.04:LTSlibssh0.9.6-2ubuntu0.22.04.6UBUNTU-CVE-2026-0965
Ubuntu:22.04:LTSlibssh0.9.6-2ubuntu0.22.04.6USN-8051-1
Ubuntu:24.04:LTSlibssh0.10.6-2ubuntu0.3USN-8051-1
Ubuntu:24.04:LTSlibssh0.10.6-2ubuntu0.3UBUNTU-CVE-2026-0965
Ubuntu:25.10libssh0.11.2-1ubuntu0.2UBUNTU-CVE-2026-0965
Ubuntu:25.10libssh0.11.2-1ubuntu0.2USN-8051-1

Affected products (as reported)

VendorProductVersions
Red Hat Red Hat Enterprise Linux 10 see references
Red Hat Red Hat Enterprise Linux 9 see references
Red Hat Red Hat Enterprise Linux 9 see references
Red Hat Red Hat Enterprise Linux 6 see references
Red Hat Red Hat Enterprise Linux 7 see references
Red Hat Red Hat Enterprise Linux 8 see references
Red Hat Red Hat Hardened Images see references
Red Hat Red Hat OpenShift Container Platform 4 see references
Red Hat Red Hat OpenShift Container Platform 4 see references

Weakness: CWE-73 · Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

References