Link Following Affecting cockpit-system package, versions <0:356.4.1-1.el9_8


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.16% (6th percentile)

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  • Snyk IDSNYK-RHEL9-COCKPITSYSTEM-22525554
  • published13 Nov 2026
  • disclosed10 Nov 2026

Introduced: 10 Nov 2026

NewCVE-2026-91151  (opens in a new tab)
CWE-59  (opens in a new tab)

How to fix?

Upgrade RHEL:9 cockpit-system to version 0:356.4.1-1.el9_8 or higher.
This issue was patched in RHSA-2026:99601.

NVD Description

Note: Versions mentioned in the description apply only to the upstream cockpit-system package and not the cockpit-system package as distributed by RHEL. See How to fix? for RHEL:9 relevant fixed versions and status.

A flaw was found in Cockpit. A local authenticated user with control over a target account's home directory can exploit a privileged symlink dereference vulnerability in the ssh-add-public-key.sh helper. When this helper runs with elevated privileges, it can be tricked into following attacker-controlled symlinks within the .ssh or authorized_keys paths. This allows the attacker to arbitrarily change file ownership and modes, potentially leading to local privilege escalation and impacting the integrity, confidentiality, and availability of the system.

CVSS Base Scores

version 3.1