{"id":"CVE-2021-27949","aliases":["EUVD-2021-14667"],"status":"published","description":"Cross-site Scripting vulnerability in MyBB before 1.8.26 via Custom moderator tools.","severity":{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.00692,"percentile":0.53322,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2021-03-15T17:19:11Z","modified":"2026-06-17T03:45:39Z","products":[{"vendor":"mybb","product":"mybb"}],"references":[{"url":"https://github.com/mybb/mybb/security/advisories/GHSA-cmmr-39v8-8rx2","tags":["x_refsource_MISC","x_transferred","Patch","Release Notes","Third Party Advisory"]}],"sources":{"cve":[{"id":"CVE-2021-27949","description":"Cross-site Scripting vulnerability in MyBB before 1.8.26 via Custom moderator tools.","status":"published","published":"2021-03-15T17:19:11Z","modified":"2024-08-03T21:33:17.251Z","updated_at":"2026-11-02T14:33:04.360272Z"}],"euvd":[{"id":"EUVD-2021-14667","description":"Cross-site Scripting vulnerability in MyBB before 1.8.26 via Custom moderator tools.","status":"published","published":"2021-03-15T17:19:11Z","modified":"2024-08-03T21:33:17Z","updated_at":"2026-11-03T03:24:47.80549Z"}],"nvd":[{"id":"CVE-2021-27949","description":"Cross-site Scripting vulnerability in MyBB before 1.8.26 via Custom moderator tools.","status":"published","published":"2021-03-15T18:15:18.957Z","modified":"2026-06-17T03:45:39.813Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:06:50.805771Z"}]}}