Bug 2542628 (CVE-2026-97025) - CVE-2026-97025 flatpak: flatpak: World-readable OCI authentication token in system-helper cache path
Summary: CVE-2026-97025 flatpak: flatpak: World-readable OCI authentication token in s...
Keywords:
Status: NEW
Alias: CVE-2026-97025
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-28 19:55 UTC by OSIDB Bzimport
Modified: 2026-09-28 20:13 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:


Attachments (Terms of Use)

Description OSIDB Bzimport 2026-09-28 19:55:01 UTC
GHSA-7rvf-rqr3-43j4 (https://github.com/flatpak/flatpak/security/advisories/GHSA-7rvf-rqr3-43j4)

Description: When downloading apps or runtimes from an OCI repository that requires authentication, the OCI authentication token is written with the default permissions 0644. On multi-user systems this allows other local users to read the token file. This is related to GHSA-r9w3-qx54-qvc8 but with a different impact: unlike that issue, this one is not mitigated by a restrictive umask. libostree repositories such as Flathub are not affected; this only applies to apps, runtimes, or extensions downloaded from an OCI repository (such as those used by Fedora).

Mitigation: No known mitigation other than updating, or using libostree repositories (e.g. Flathub) or unauthenticated/public OCI repositories instead. Patched in 1.18.4 by commit f911bbf0 ("oci: Stop persisting bearer token to child repo on disk"). Credit: Found by AISLE in cooperation with Red Hat.


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