{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "16.4.0"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1ff9d04534feb5f8f3cc2d3613c0fe8b51a1c0ba"
            },
            {
              "fixed": "2cfa7a3d194c8b95edde43038d8f5be5a359e785"
            },
            {
              "fixed": "bef1a4ac424b4e986589e4cfc9f4d134f1b16f15"
            }
          ],
          "repo": "https://github.com/piwigo/piwigo",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-6wj3-7fhw-gfpm"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-89"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44642.json"
  },
  "details": "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_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.",
  "id": "CVE-2026-44642",
  "modified": "2026-09-27T03:30:44.584003238Z",
  "published": "2026-09-25T15:47:59.389Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/Piwigo/Piwigo/releases/tag/16.4.0"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44642.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/Piwigo/Piwigo/security/advisories/GHSA-6wj3-7fhw-gfpm"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-44642"
    },
    {
      "type": "FIX",
      "url": "https://github.com/Piwigo/Piwigo/commit/1ff9d04534feb5f8f3cc2d3613c0fe8b51a1c0ba"
    },
    {
      "type": "FIX",
      "url": "https://github.com/Piwigo/Piwigo/commit/2cfa7a3d194c8b95edde43038d8f5be5a359e785"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Piwigo: SQL injection in upgrade authentication allows unauthenticated upgrade authorization bypass (PHP 8+)"
}