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VulnerabilityPublished Updated

CVE-2026-91202: cockpit-files · CWE-61

Affects cockpit-filesSource GCVE Database

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Authoritative record:CVE-2026-91202· Medium 6.1

Not known to be exploited · CVSS 6.1 Medium.

Data as of 2 Nov 2026, 22:58 UTC

CVSS 3.1 base score
6.1Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.1% chance of exploitation in 30 days – higher than 2% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:H/A:L

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 18 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq 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 2 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
Ubuntu 26.10cockpit-filespkg:deb/ubuntu/cockpit-files?arch=source&distro=stonkingOther threatsAffected
  • 39-1 – 44-1
5 affected builds
Fixed in–
Ubuntu 26.04 LTScockpit-filespkg:deb/ubuntu/cockpit-files?arch=source&distro=resoluteOther threatsAffected
  • =36-1
  • =39-1
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Until a fix is available, users should exercise caution when using the "Paste as owner" function, especially when handling directories containing symbolic links. Avoid selecting non-original owners during paste operations to reduce risk.

Description

A flaw was found in cockpit-files. A low-privileged local user can exploit this vulnerability by crafting a directory containing a symbolic link (symlink) and then using the privileged "Paste as owner" function. This allows for arbitrary file ownership changes outside the intended pasted directory, leading to a compromise of data integrity. In some cases, this could also lead to reduced confidentiality if the new ownership grants unauthorized read access. Exploitation requires user interaction to select a non-original owner during the paste operation.

References

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