Bug 2542915 - CVE-2026-97025 flatpak: flatpak: World-readable OCI authentication token in system-helper cache path [fedora-all]
Summary: CVE-2026-97025 flatpak: flatpak: World-readable OCI authentication token in s...
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Fedora
Classification: Fedora
Component: flatpak
Version: rawhide
Hardware: Unspecified
OS: Unspecified
unspecified
low
Target Milestone: ---
Assignee: David King
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard: {"flaws": ["dd3545a9-c3b4-4997-b5fd-f...
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-29 03:08 UTC by Melissa Ing
Modified: 2026-10-04 01:42 UTC (History)
5 users (show)

Fixed In Version: flatpak-1.18.4-1.fc44
Clone Of:
Environment:
Last Closed: 2026-10-04 01:42:13 UTC
Type: ---
Embargoed:


Attachments (Terms of Use)

Description Melissa Ing 2026-09-29 03:08:05 UTC
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

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.

Comment 1 Fedora Update System 2026-09-30 08:13:45 UTC
FEDORA-2026-7a31054ed6 (flatpak-1.18.4-1.fc44) has been submitted as an update to Fedora 44.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-7a31054ed6

Comment 2 Fedora Update System 2026-10-01 02:00:50 UTC
FEDORA-2026-7a31054ed6 has been pushed to the Fedora 44 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-7a31054ed6`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-7a31054ed6

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 3 Fedora Update System 2026-10-04 01:42:13 UTC
FEDORA-2026-7a31054ed6 (flatpak-1.18.4-1.fc44) has been pushed to the Fedora 44 stable repository.
If problem still persists, please make note of it in this bug report.


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