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Fencer Vulns
medium 6.1

CVE-2026-91202 json

Cockpit-files: cockpit-files: arbitrary file ownership change via symlink following in privileged paste

published 2026-09-18 51 d ago modified 2026-11-06 3 d ago also EUVD-2026-83298

cvss
6.1
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 4%
public exploits
0
none known

Summary

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.

Patch / fix

  • Red Hat Red Hat Enterprise Linux 10 0:36.1-1.el10_2
  • Red Hat Red Hat Enterprise Linux 9 0:36.1-1.el9_8
  • cockpit-files Debian 14 45-1

debian advisories DEBIAN-CVE-2026-91202

  • cockpit-files RHEL 9 36.1-1.el9_8

red hat advisories RHSA-2026:84595

  • cockpit-files openSUSE Tumbleweed 44-1.1

opensuse advisories openSUSE-SU-2026:11844-1

  • cockpit-files AlmaLinux 10 36.1-1.el10_2
  • cockpit-files AlmaLinux 9 36.1-1.el9_8

almalinux advisories ALSA-2026:95570ALSA-2026:84595

  • cockpit-files Rocky Linux 10 36.1-1.el10_2
  • cockpit-files Rocky Linux 9 36.1-1.el9_8

rocky linux advisories RLSA-2026:95570RLSA-2026:84595

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-91202 updated cvss 6.1

cockpit-files: cockpit-files: Arbitrary file ownership change via symlink following in privileged paste

  • Red Hat Enterprise Linux AppStream (v. 9) cockpit-files 36.1-1.el9_8
    fixed: vendor fix RHSA-2026:84595
  • Red Hat Enterprise Linux AppStream (v. 10) cockpit-files 36.1-1.el10_2
    fixed: vendor fix RHSA-2026:95570

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
47 d ago

Exploit prediction

0.16% chance of exploitation in the next 30 days, higher than 4% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 6.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:H/A:L

Affected products

  • Red Hat Red Hat Enterprise Linux 10
  • Red Hat Red Hat Enterprise Linux 9

Classification

Weakness
  • CWE-61 UNIX Symbolic Link (Symlink) Following

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.