This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-59847 →

DEBIAN-CVE-2026-59847

A flaw was found in libssh. Incorrect AES-GCM finalization checks in builds using the OpenSSL backend can effectively remove integrity protection, all...

Original description

The description as published by the source.

A flaw was found in libssh. Incorrect AES-GCM finalization checks in builds using the OpenSSL backend can effectively remove integrity protection, allowing an in-path attacker to modify plaintext on the wire without detection.

Source: OSV.dev (Open Source Vulnerabilities) OSV

Affected packages

Debian:12 libssh

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Debian:13 libssh

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.11.5-0+deb13u1"}]}]

Debian:14 libssh

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.12.1-1"}]}]

References

advisory security-tracker.debian.org