CVE-2026-59850: Libssh

High severity, CVSS 7.5. EPSS: 0.3% chance of exploitation in the next 30 days.

A flaw was found in libssh. If data packets are processed after a channel is closed, channel data callbacks can be invoked after the associated data has already been freed, leading to crashes or possible use-after-free conditions.

Affected products

• Libssh Libssh: affected versions not specified
• Red Hat Enterprise Linux: version 8.0 only; version 9.0 only; version 10.0 only
• Red Hat Hardened Images: affected versions not specified

Published 2026-07-21. Last modified 2026-09-01.