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CVE-2026-97026

3.9 · LOW

Flatpak creates temporary child repository directories under the user cache with world-writable permissions (0777).

Published Sep 28, 2026CWE-378EPSS 0.10%

Overview

CVE-2026-97026 is a low-severity vulnerability. It was published on September 28, 2026 and has a CVSS 3.1 base score of 3.9 (LOW).

This vulnerability has a CVSS 3.1 base score of 3.9, rated LOW. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refaccess.redhat.com/security/cve/CVE-2026-97026Refbugzilla.redhat.com/show_bug.cgi?id=2542637GitHubgithub.com/flatpak/flatpak/security/advisories/GHSA-r9w3-qx54-qvc8

How CyberStrike helps

Frequently asked questions

What is CVE-2026-97026?

CVE-2026-97026 is a low-severity vulnerability. It was published on September 28, 2026 and has a CVSS 3.1 base score of 3.9 (LOW).

How severe is CVE-2026-97026?

This vulnerability has a CVSS 3.1 base score of 3.9, rated LOW. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-97026?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-97026?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-97026 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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