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CVE-2026-59847

Libssh: libssh: integrity downgrade via openssl aes-gcm tag verification

Published: 7/21/2026 Last updated: 9/1/2026 Reserved: 7/7/2026

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.

CNA assigner: redhat (53f830b8-0a3f-465b-8143-3b8a9948e749) Requested by: n/a

Metrics

Version Score Severity Vector String
3.1 5.9 Medium CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

Opam packages affected (1)

libssh

Products affected (0)

No product listed.

References (6)

Credits (1)