CVE-2026-59850CWE-416

CVE-2026-59850

Medium · published July 21, 2026

CVSS v3.1
4.3
EPSS
0%
Percentile
26.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
4.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
CVSS v4.0
Not supplied
EPSS
0.00346 · 26.9th percentile
Weakness
CWE-416 · Use After Free
Published
2026-07-21T19:16Z
Affected products (5)
ProductVersionsFixed in
libssh/libsshall versions—
redhat/hardened_imagesall versions—
redhat/enterprise_linuxall versions—
redhat/enterprise_linuxall versions—
redhat/enterprise_linuxall versions—
References (6)
https://access.redhat.com/errata/RHSA-2026:42922 · [email protected]https://access.redhat.com/errata/RHSA-2026:55855 · [email protected]https://access.redhat.com/errata/RHSA-2026:62217 · [email protected]https://access.redhat.com/errata/RHSA-2026:62218 · [email protected]https://access.redhat.com/security/cve/CVE-2026-59850 · [email protected]https://bugzilla.redhat.com/show_bug.cgi?id=2498183 · [email protected]
EPSS history
Timeline
  • 21 JUL 14:15Z
    Libssh: libssh: use-after-free via data callbacks on closed channels
    cvelistv5