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

Severity: low (CVSS 3.3 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-03-26 · updated 2026-09-01
Weakness: CWE-73

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 products

libssh: through 0.11.3
Red Hat Enterprise Linux: 9.0, 10.0

References

https://access.redhat.com/errata/RHSA-2026:18160
https://access.redhat.com/errata/RHSA-2026:18683
https://access.redhat.com/security/cve/CVE-2026-0965
https://bugzilla.redhat.com/show_bug.cgi?id=2436980

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