{"id":"CVE-2026-44642","title":"Piwigo is a full featured open source photo gallery application for the web","summary":"Piwigo is a full featured open source photo gallery application for the web. Prior to 16.4.0, check_upgrade_access_rights() in admin/include/functions_upgrade.php conditionally escapes the submitted username only when the removed get_mag…","severity":"high","cvss":8.1,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-89"],"vendor":"Piwigo","product":"Piwigo","affected":["Piwigo < 16.4.0"],"published":"2026-09-25","updated":"2026-09-25","sourceUpdated":"2026-09-25T17:17:08.577","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-44642","references":[{"url":"https://github.com/Piwigo/Piwigo/commit/1ff9d04534feb5f8f3cc2d3613c0fe8b51a1c0ba","label":"security-advisories@github.com"},{"url":"https://github.com/Piwigo/Piwigo/commit/2cfa7a3d194c8b95edde43038d8f5be5a359e785","label":"security-advisories@github.com"},{"url":"https://github.com/Piwigo/Piwigo/releases/tag/16.4.0","label":"security-advisories@github.com"},{"url":"https://github.com/Piwigo/Piwigo/security/advisories/GHSA-6wj3-7fhw-gfpm","label":"security-advisories@github.com"},{"url":"https://github.com/Piwigo/Piwigo/security/advisories/GHSA-6wj3-7fhw-gfpm","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd","cve.org","exploit-available"],"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"total","timestamp":"2026-09-25T16:40:38.942377Z"},"ingestedAt":"2026-09-25T16:12:08.724Z","slug":"CVE-2026-44642","body":"## Overview\n\nPiwigo is a full featured open source photo gallery application for the web. Prior to 16.4.0, check_upgrade_access_rights() in admin/include/functions_upgrade.php conditionally escapes the submitted username only when the removed get_magic_quotes_gpc function exists, so PHP 8 and later concatenate an unauthenticated username directly into the upgrade authentication SQL query. When database upgrades are pending, a crafted query result can satisfy the status and password checks, set PHPWG_IN_UPGRADE, and authorize upgrade execution without valid administrator credentials. This can cause unauthorized database integrity changes and service disruption. This vulnerability is fixed in 16.4.0.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":57,"depthScoreParts":{"impact":44.6,"likelihood":0,"exploitation":12,"ransomware":0},"changes":[{"seq":211066,"id":"CVE-2026-44642","ts":1790356434936,"field":"exploit_available","old":"false","new":"true"}]}