Low 3.9Published Sep 28, 2026

CVE-2026-97026Flatpak: flatpak: world-writable temporary child repositories in system-helper cache path

Updated under an hour ago (2026-10-19 09:30 UTC)

Does this affect you?

It affects Red Hat Enterprise Linux 10. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

Do this next

Start free and add your stack

Free account, 1 product

Every CVE for Red Hat Enterprise Linux 10

Exploited in the last 30 days

Flatpak creates temporary child repository directories under the user cache with world-writable permissions (0777). On multi-user systems with a permissive umask, other local users could read or modify the temporary directory used while installing apps or runtimes, potentially causing installation failures (denial of service); tampered content would fail signature/digest verification rather than being trusted.

CVSS: 3.9 LOW (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:L
Weakness (CWE): CWE-378
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: redhat
NVD analysis: Awaiting Analysis
Record last updated: Sep 30, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Red Hat Red Hat Enterprise Linux 10 redhat:enterprise_linux	10	CNA record

References

https://access.redhat.com/security/cve/CVE-2026-97026vdb-entry, x-refsource-redhat
https://bugzilla.redhat.com/show_bug.cgi?id=2542637issue-tracking, x-refsource-redhat
https://github.com/flatpak/flatpak/security/advisories/GHSA-r9w3-qx54-qvc8

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.