{"id":"CVE-2026-53756","summary":"Emlog Blind SQL Injection via Authentication Cookie","details":"Emlog is an open source website building system. Prior to version 2.6.16, Emlog CMS Pro contains a blind SQL injection in User_Model::getUserDataByLogin(). The $account parameter is directly interpolated into SQL queries without any filtering. The vulnerability is reachable through the auth cookie validation path, where $username is extracted from the cookie and passed unfiltered into SQL — guarded only by an HMAC signature that requires AUTH_KEY to forge. This issue has been patched in version 2.6.16.","aliases":["GHSA-xq97-53c2-vvfg"],"modified":"2026-09-06T03:46:08.090612020Z","published":"2026-09-04T17:46:58.174Z","database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-89"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53756.json"},"references":[{"type":"WEB","url":"https://github.com/emlog/emlog/releases/tag/pro-2.6.16"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53756.json"},{"type":"ADVISORY","url":"https://github.com/emlog/emlog/security/advisories/GHSA-xq97-53c2-vvfg"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-53756"},{"type":"FIX","url":"https://github.com/emlog/emlog/commit/92b6eea618891b28ed0c520564dff26e170645b4"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/emlog/emlog","events":[{"introduced":"0"},{"fixed":"92b6eea618891b28ed0c520564dff26e170645b4"},{"fixed":"59c3a597f206ae040d1036f2ef28b4656edc548c"}],"database_specific":{"source":["AFFECTED_FIELD","REFERENCES"],"extracted_events":[{"introduced":"0"},{"fixed":"2.6.16"}]}}],"versions":["pro-2.6.15","pro-2.6.14","pro-2.6.13","pro-2.6.12","pro-2.6.11","pro-2.6.10","pro-2.6.9","pro-2.6.8","pro-2.6.7","pro-2.6.6","pro-2.6.5","pro-2.6.4","pro-2.6.3","pro-2.6.2","pro-2.6.1","pro-2.6.0","pro-2.5.26","pro-2.5.25","pro-2.5.24","pro-2.5.23","pro-2.5.22","pro-2.5.21","pro-2.5.20","pro-1.0.0","pro-2.5.19","pro-2.5.18","pro-2.5.17","pro-2.5.16","pro-2.5.15","pro-2.5.14","pro-2.5.13","pro-2.5.12","pro-2.5.11","pro-2.5.10","pro-2.5.9","pro-2.5.8","pro-2.5.7","pro-2.5.6","pro-2.5.5","pro-2.5.4","pro-2.5.3","pro-2.5.2","pro-2.5.1","pro-2.4.3","pro-2.4.2","pro-2.4.1","pro-2.4.0","pro-2.3.18","pro-2.3.17","pro-2.3.16","pro-2.3.15","pro-2.3.14","pro-2.3.13","pro-2.3.12","pro-2.3.11","pro-2.3.10","pro-2.3.9","pro-2.3.8","pro-2.3.7","pro-2.3.6","pro-2.3.5","pro-2.3.4","pro-2.3.2","pro-2.3.1","pro-2.3.0","pro-2.2.11","pro-2.2.10","pro-2.2.9","pro-2.2.8","pro-test-02","pro-test-01","pro-2.2.7","pro-2.2.6","pro-2.2.5","pro-2.2.4","pro-2.2.3","pro-2.2.2","pro-2.2.1","pro-2.2.0","pro-2.1.15","pro-2.1.14","pro-2.1.13","pro-2.1.12","ci","pro-2.1.11","pro-2.1.10","pro-2.1.9","pro-2.1.8","pro-2.1.7","pro-2.1.6","pro-2.1.5","pro-2.1.4","pro-2.1.3","pro-2.1.2","pro-2.1.1","pro-2.1.0","pro-2.0.3","pro-2.0.2","pro-2.0.1","pro-2.0.0","pro-1.9.3","pro-1.9.2","pro-1.9.1","pro-1.9.0","pro-1.8.0","pro-1.7.1","pro-1.7.0","pro-1.6.0","pro-1.5.1","pro-1.5.0.new","pro-1.5.0","pro-1.4.0","pro-1.3.1","pro-1.3.0","pro-1.2.2","pro-1.2.1","pro-1.2.0","pro-1.1.1","pro-1.1.0","pro-1.0.8","pro-1.0.7","pro-1.0.6","pro-1.0.5","pro-1.0.4","pro-1.0.3","pro-1.0.2","pro-1.0.1","6.1.0","6.0.0","5.3.1","emlog_5.3.0","emlog_5.2.1","emlog_5.2.0","emlog_5.1.2"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53756.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N"}]}