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CVE-2026-42322

9.1 · CRITICAL

Piwigo is a full featured open source photo gallery application for the web.

Published Sep 25, 2026CWE-434EPSS 1.28%

Overview

CVE-2026-42322 is a critical-severity vulnerability. It was published on September 25, 2026 and has a CVSS 3.1 base score of 9.1 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 9.1, rated CRITICAL. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

Piwigo is a full featured open source photo gallery application for the web. Prior to 16.4.0, admin/themes_standard_pages.php validates uploaded logo content by MIME type but reuses the attacker-controlled extension from std_pgs_logo when constructing the stored filename. An authenticated administrator can upload image content with a server-executable final extension, causing the file to be placed in the web-accessible logo directory and executed when requested if the web server handles that extension. This can permit arbitrary command execution, data disclosure, modification, persistence, and service disruption. This vulnerability is fixed in 16.4.0.

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

GitHubgithub.com/Piwigo/Piwigo/commit/1e7f7262cb30e6916779f93e66d5d6579ec75a11GitHubgithub.com/Piwigo/Piwigo/commit/4a13ec9a8f4881ae1f23bdfd24d7b90cd0802cdcGitHubgithub.com/Piwigo/Piwigo/releases/tag/16.4.0GitHubgithub.com/Piwigo/Piwigo/security/advisories/GHSA-7w97-5g4p-xqvvGitHubgithub.com/Piwigo/Piwigo/security/advisories/GHSA-7w97-5g4p-xqvv

How CyberStrike helps

Frequently asked questions

What is CVE-2026-42322?

CVE-2026-42322 is a critical-severity vulnerability. It was published on September 25, 2026 and has a CVSS 3.1 base score of 9.1 (CRITICAL).

How severe is CVE-2026-42322?

This vulnerability has a CVSS 3.1 base score of 9.1, rated CRITICAL. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-42322?

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-2026-42322?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-42322 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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