CVE-2026-91203
Cockpit-files: cockpit-files: arbitrary file ownership and permission modification via symlink race condition
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.
INFO
Published Date :
Sept. 18, 2026, 7:21 p.m.
Last Modified :
Sept. 18, 2026, 7:21 p.m.
Remotely Exploit :
No
Source :
redhat
Affected Products
The following products are affected by CVE-2026-91203
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | 53f830b8-0a3f-465b-8143-3b8a9948e749 |
Solution
- Update cockpit-files to the latest version.
- Review and validate file operation handling.
- Implement robust locking mechanisms.
- Minimize privileged file operation scope.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-91203 vulnerability anywhere in the article.