What’s Vulnerable › Vulnerabilities

CVE-2026-91203: Cockpit-files: cockpit-files: arbitrary file ownership and permission modification via symlink race condition

• Severity: medium (CVSS 6.0 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-18 · updated 2026-09-22
• Weakness: CWE-363

Description

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.

Affected products

• Red Hat Enterprise Linux 10: all versions
• Red Hat Enterprise Linux 9: all versions

References

• https://access.redhat.com/security/cve/CVE-2026-91203
• https://bugzilla.redhat.com/show_bug.cgi?id=2465632
• https://bugzilla.redhat.com/show_bug.cgi?id=2465632

Get alerted when CVE-2026-91203 or the next vulnerability affects your stack