Vulnerability in Red Hat Enterprise Linux 10

CVE-2026-91203

A flaw was found in cockpit-files. This vulnerability allows a local attacker to exploit a timing issue, known as a symlink race condition, during privileged file operations such as changing file ownership or permissions. By manipulating directory entries and winning this race, the attacker can redirect these operations to unintended files. This could lead to unauthorized changes in file ownership and permissions on arbitrary files, potentially compromising system integrity and availability by altering system or application states or rendering services unusable.

CVSS v3 metric

CVSS v3 base score 6.0 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:H.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-91203?
CVE-2026-91203 is a medium-severity vulnerability in Red Hat Enterprise Linux 10, classified under Race Condition Enabling Link Following. CVSS score: 6.0/10. Published 2026-09-18.
How severe is CVE-2026-91203?
Medium severity. CVSS v3 base score is 6.0 out of 10.