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VULNERABILITIES

CVE-2026-97026 Details

Description

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:3.9 LOWVector:CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:L

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://access.redhat.com/security/cve/CVE-2026-97026 [email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=2542637 [email protected]
https://github.com/flatpak/flatpak/security/advisories/GHSA-r9w3-qx54-qvc8 [email protected]

Weakness Enumeration

CWE-IDCWE NameSource
CWE-378Creation of Temporary File With Insecure Permissions[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

2 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-97026
NVD Published Date:
Sep 28, 2026
NVD Last Modified:
Sep 30, 2026
Source:
[email protected]
CVE-2026-97026 Details - Not Deferred