CVE-2026-59850 MEDIUM

CVE-2026-59850: Libssh: libssh: use-after-free via data callbacks on closed channels

Vendor Red Hat
Product Red Hat Enterprise Linux 10
Weakness CWE-416
Published July 21, 2026
Last update July 21, 2026
View on NVD All CVEs

CVSS base score

4.3/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality None
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

July 21, 2026 CVE published
July 21, 2026 Record updated