CVE-2026-59850

high

Description

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.

References

https://bugzilla.redhat.com/show_bug.cgi?id=2498183

https://access.redhat.com/security/cve/CVE-2026-59850

https://access.redhat.com/errata/RHSA-2026:42922

Details

Source: Mitre, NVD

Published: 2026-07-21

Updated: 2026-07-30

Risk Information

CVSS v2

Base Score: 7.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

Severity: High

CVSS v3

Base Score: 7.5

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

Severity: High

EPSS

EPSS: 0.00255