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Vendor Workaround
Until a fixed package is available, avoid performing privileged ownership or permission changes through the Cockpit Files application in directories that are writable by untrusted or low-privileged users. Where possible, restrict or disable superuser-backed file operations (the elevated chown/chmod flows used for file creation, upload, ownership, and permission changes) for shared writable paths, and perform file metadata changes only on trusted directories. Exploitability is substantially reduced when privileged Cockpit sessions do not operate on attacker-writable directories.
Tracking
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Mon, 21 Sep 2026 19:30:00 +0000
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ssvc
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Sat, 19 Sep 2026 00:15:00 +0000
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threat_severity
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threat_severity
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Fri, 18 Sep 2026 21:30:00 +0000
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| 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. | |
| Title | Cockpit-files: cockpit-files: arbitrary file ownership and permission modification via symlink race condition | |
| First Time appeared |
Redhat
Redhat enterprise Linux |
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| Weaknesses | CWE-363 | |
| CPEs | cpe:/o:redhat:enterprise_linux:10 cpe:/o:redhat:enterprise_linux:9 |
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| Vendors & Products |
Redhat
Redhat enterprise Linux |
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cvssV3_1
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Status: PUBLISHED
Assigner: redhat
Published:
Updated: 2026-10-16T12:19:16.460Z
Reserved: 2026-09-14T21:59:00.235Z
Link: CVE-2026-91203
Updated: 2026-09-21T18:34:11.531Z
Status : Awaiting Analysis
Published: 2026-09-18T20:17:29.397
Modified: 2026-09-22T19:37:36.747
Link: CVE-2026-91203
OpenCVE Enrichment
Updated: 2026-09-21T19:24:52Z
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CWE-363
Race Condition Enabling Link Following