๐Ÿ” CVE Alert

CVE-2026-97026

LOW 3.9

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

CVSS Score
3.9
EPSS Score
0.0%
EPSS Percentile
0th

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.

CWE CWE-378
Vendor red hat
Product red hat enterprise linux 10
Published Sep 28, 2026
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CVSS v3 Breakdown

CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:L
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
Low

Affected Versions

Red Hat / Red Hat Enterprise Linux 10
All versions affected
Red Hat / Red Hat Enterprise Linux 7
All versions affected
Red Hat / Red Hat Enterprise Linux 8
All versions affected
Red Hat / Red Hat Enterprise Linux 9
All versions affected

References

NVD โ†— CVE.org โ†— EPSS Data โ†—
access.redhat.com: https://access.redhat.com/security/cve/CVE-2026-97026 bugzilla.redhat.com: https://bugzilla.redhat.com/show_bug.cgi?id=2542637 github.com: https://github.com/flatpak/flatpak/security/advisories/GHSA-r9w3-qx54-qvc8

Credits

Red Hat would like to thank AISLE for reporting this issue.