Low · CVSS 3.3CVE-2026-0965

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

Answer in brief

CVE-2026-0965 records a Low severity (CVSS 3.3) vulnerability in Libssh: libssh: denial of service via improper configuration file handling. The current sources do not mark it as known exploited. The current feed maps Red Hat/libssh (generic), Red Hat/openshift/ose-rhel-coreos-8 (generic), Red Hat/openshift/ose-rhel-coreos-9 (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Mar 26, 2026Updated Sep 1, 2026Source checked Oct 5, 2026First seen by HOL Aug 21, 2026Material review Sep 1, 2026

Upstream Advisory

Key facts

Risk: Low · CVSS 3.3
Exploitation: Not marked as known exploited
Affected software: 6 mapped packages or products
Fix availability: Not reported

Why this deserves its current priority

CVSS is 3.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Red Hat/libssh (generic), Red Hat/openshift/ose-rhel-coreos-8 (generic), Red Hat/openshift/ose-rhel-coreos-9 (generic). Check affected ranges and fixed versions before updating.

Affected products and reported versions
Product	Affected versions	Fixed versions
cpe:2.3:a:libssh:libssh::::::::	Not reported	Not reported
cpe:2.3:o:redhat:enterprise_linux:10.0:::::::*	Not reported	Not reported
cpe:2.3:o:redhat:enterprise_linux:9.0:::::::*	Not reported	Not reported

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Red Hat/libsshgeneric	*	Not reported
Red Hat/openshift/ose-rhel-coreos-8generic	*	Not reported
Red Hat/openshift/ose-rhel-coreos-9generic	*	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Red Hat/libssh, Red Hat/openshift/ose-rhel-coreos-8, Red Hat/openshift/ose-rhel-coreos-9.
Review the reported fix. Source-reported workaround: Ensure the client and server are using only regular files as configuration.

Evidence timeline and material changes

Published upstream
Mar 26, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 1, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 21, 2026

Sources and claim methodology

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.