CVE-2026-42322

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.

• CWE-434

• https://github.com/Piwigo/Piwigo/commit/1e7f7262cb30e6916779f93e66d5d6579ec75a11
• https://github.com/Piwigo/Piwigo/commit/4a13ec9a8f4881ae1f23bdfd24d7b90cd0802cdc
• https://github.com/Piwigo/Piwigo/releases/tag/16.4.0
• https://github.com/Piwigo/Piwigo/security/advisories/GHSA-7w97-5g4p-xqvv

Published

Sep 25, 2026

Last Modified

Sep 25, 2026

Status

Deferred

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2026-42316kafka-sink-azure-kusto Kafka Connect plugin is the official …6.5
• CVE-2026-42317GLPI is a free asset and IT management software package. Sta…7
• CVE-2026-42318GLPI is a free asset and IT management software package. Sta…7
• CVE-2026-4232A vulnerability was determined in Tiandy Integrated Manageme…7.3
• CVE-2026-42320GLPI is a free asset and IT management software package. Sta…5.9
• CVE-2026-42321GLPI is a free asset and IT management software package. Sta…8.4
• CVE-2026-42323Piwigo is a full featured open source photo gallery applicat…7.2
• CVE-2026-42324Piwigo is a full featured open source photo gallery applicat…7.2
• CVE-2026-42326ImageMagick is free and open-source software used for editin…5.1
• CVE-2026-42327rust-openssl provides OpenSSL bindings for the Rust programm…8.7
• CVE-2026-42328go-ipld-prime is an implementation of the InterPlanetary Lin…6.2
• CVE-2026-42329Iris is a web collaborative platform that helps incident res…4.7