CVE-2026-91205: cockpit-files · CWE-363
Source GCVE Database
Not known to be exploited · CVSS 6.0 Medium : update Red Hat Enterprise Linux 10 when convenient.
Data as of 6 Nov 2026, 04:32 UTC
Thin evidence
One scorer or none| CNA (redhat) | CVSS 3.1 | 6.0 |
|---|
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:NExploitation evidence
Disclosed: evidence found.
CVE published 18 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.
What to do
Patches and advisories
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Red Hat Enterprise Linux 10cockpit-files | Affected– | Fixed in– |
| Red Hat Enterprise Linux 9cockpit-files | Affected– | Fixed in– |
AI-suggested
Red Hat has released an official security update for Red Hat Enterprise Linux 9 that fixes this vulnerability. Users should apply the update as described in Red Hat advisory RHSA-2026:84595 and the referenced article https://access.redhat.com/articles/11258. No additional mitigation steps are required beyond applying the vendor-provided patch.
Description
A race condition vulnerability in cockpit-files allows a local unprivileged attacker to exploit directory creation with owner assignment. By controlling a writable parent directory, the attacker can replace a newly created directory with a symbolic link before the ownership change is applied, redirecting ownership changes to arbitrary files. This can lead to information disclosure or unauthorized modification of sensitive files. Red Hat has issued a security update for Red Hat Enterprise Linux 9 to address this issue.
References
- nvd.nist.gov/vuln/detail/CVE-2026-91205 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:84595 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:95570 (opens in a new tab)
- access.redhat.com/security/cve/CVE-2026-91205 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2466442 (opens in a new tab)