{"id":"CVE-2026-55572","summary":"e107: SQL injection in alt_auth plugin (otherdb / e107db backends) via login username","details":"e107 is a content management system (CMS). Prior to 2.3.7, the bundled alt_auth plugin's otherdb and e107db authentication backends interpolate the submitted login username directly into SQL in e107_plugins/alt_auth/otherdb_auth.php and e107_plugins/alt_auth/e107db_auth.php. The login() methods execute those strings with PDO::query() before effective sanitization, so an unauthenticated user can inject SQL when alt_auth is installed and either backend is configured with a live external database connection. The injection can expose or modify data available to the configured database account, and query failures can additionally disclose the generated query through the debug-message path. This issue is fixed in version 2.3.7.","aliases":["GHSA-5f75-c25x-59wx"],"modified":"2026-10-15T02:47:35.450295383Z","published":"2026-10-14T18:12:10.984Z","database_specific":{"cwe_ids":["CWE-89"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55572.json","cna_assigner":"GitHub_M"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55572.json"},{"type":"FIX","url":"https://github.com/e107inc/e107/commit/120bd4bdbe18c8690c60a007ad6716e52e6ee965"},{"type":"WEB","url":"https://github.com/e107inc/e107/releases/tag/v2.3.7"},{"type":"ADVISORY","url":"https://github.com/e107inc/e107/security/advisories/GHSA-5f75-c25x-59wx"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-55572"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/e107inc/e107","events":[{"introduced":"0"},{"fixed":"0fbef3cd2480570cc5511ece25a3974256d334ca"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"2.3.7"}],"source":"AFFECTED_FIELD"}}],"versions":["v2.3.6","v2.3.5","v2.3.4","v2.3.3","v2.3.2","v2.3.1","v2.3.0","v2.3.0-rc1","v2.2.1","v2.2.0","v2.1.9","v2.1.8","v2.1.7","v2.1.6","v2.1.5","v2.1.4","v2.1.3","v2.1.2","v2.1.1","v2.0-beta1","v2.0alpha"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-55572.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H"}]}