{"id":"CVE-2021-27890","aliases":["EUVD-2021-14627"],"status":"published","description":"SQL Injection vulnerablity in MyBB before 1.8.26 via theme properties included in theme XML files.","severity":{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-12","score":0.10676,"percentile":0.9587,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-89"],"published":"2021-03-15T17:04:13Z","modified":"2026-06-17T03:45:34Z","exploits":[{"source":"exploitdb","id":"EDB-49696","title":"MyBB 1.8.25 - Chained Remote Command Execution","type":"webapps","platform":"php","date":"2021-03-22","url":"https://www.exploit-db.com/exploits/49696"},{"source":"pocgithub","id":"xiaopan233/Mybb-XSS_SQL_RCE-POC","title":"xiaopan233/Mybb-XSS_SQL_RCE-POC","date":"2021-03-25","url":"https://github.com/xiaopan233/Mybb-XSS_SQL_RCE-POC"}],"products":[{"vendor":"mybb","product":"mybb"}],"references":[{"url":"https://github.com/mybb/mybb/security/advisories/GHSA-r34m-ccm8-mfhq","tags":["x_refsource_MISC","x_transferred","Patch","Release Notes","Third Party Advisory"]},{"url":"http://packetstormsecurity.com/files/161908/MyBB-1.8.25-Remote-Command-Execution.html","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"https://blog.sonarsource.com/mybb-remote-code-execution-chain","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]}],"sources":{"cve":[{"id":"CVE-2021-27890","description":"SQL Injection vulnerablity in MyBB before 1.8.26 via theme properties included in theme XML files.","status":"published","published":"2021-03-15T17:04:13Z","modified":"2024-08-03T21:33:16.401Z","updated_at":"2026-11-02T14:33:04.679189Z"}],"euvd":[{"id":"EUVD-2021-14627","description":"SQL Injection vulnerablity in MyBB before 1.8.26 via theme properties included in theme XML files.","status":"published","published":"2021-03-15T17:04:13Z","modified":"2024-08-03T21:33:16Z","updated_at":"2026-11-03T03:24:48.366655Z"}],"nvd":[{"id":"CVE-2021-27890","description":"SQL Injection vulnerablity in MyBB before 1.8.26 via theme properties included in theme XML files.","status":"published","published":"2021-03-15T18:15:18.707Z","modified":"2026-06-17T03:45:34.017Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":6.8,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-89"],"updated_at":"2026-11-02T14:06:50.805771Z"}]}}