{"id":"CVE-2016-9421","aliases":["EUVD-2016-10231","GHSA-9cgj-rhjc-pjpc"],"status":"published","title":"Cross-site scripting (XSS) vulnerability in the Users module in the Admin control panel in MyBB ...","description":"Cross-site scripting (XSS) vulnerability in the Users module in the Admin control panel in MyBB (aka MyBulletinBoard) before 1.8.8 and MyBB Merge System before 1.8.8 might allow remote attackers to inject arbitrary web script or HTML via unspecified vectors.","severity":{"version":"3.0","score":6.1,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-07","score":0.01273,"percentile":0.70047,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2017-01-31T22:00:00Z","modified":"2026-06-17T00:56:00Z","products":[{"vendor":"mybb","product":"merge_system"},{"vendor":"mybb","product":"mybb"}],"references":[{"url":"https://blog.mybb.com/2016/10/17/mybb-1-8-8-merge-system-1-8-8-release/","tags":["x_refsource_CONFIRM","x_transferred","Patch","Release Notes","Vendor Advisory"]},{"url":"http://www.openwall.com/lists/oss-security/2016/11/18/1","tags":["mailing-list","x_refsource_MLIST","x_transferred","Mailing List","Patch","Third Party Advisory"]},{"url":"http://www.openwall.com/lists/oss-security/2016/11/10/8","tags":["mailing-list","x_refsource_MLIST","x_transferred","Mailing List","Patch","Third Party Advisory"]},{"url":"http://www.securityfocus.com/bid/94396","tags":["vdb-entry","x_refsource_BID","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2016-9421"},{"url":"https://blog.mybb.com/2016/10/17/mybb-1-8-8-merge-system-1-8-8-release"},{"url":"https://github.com/advisories/GHSA-9cgj-rhjc-pjpc"}],"sources":{"cve":[{"id":"CVE-2016-9421","description":"Cross-site scripting (XSS) vulnerability in the Users module in the Admin control panel in MyBB (aka MyBulletinBoard) before 1.8.8 and MyBB Merge System before 1.8.8 might allow remote attackers to inject arbitrary web script or HTML via unspecified vectors.","status":"published","published":"2017-01-31T22:00:00Z","modified":"2024-08-06T02:50:38.427Z","updated_at":"2026-11-02T14:33:32.103757Z"}],"euvd":[{"id":"EUVD-2016-10231","description":"Cross-site scripting (XSS) vulnerability in the Users module in the Admin control panel in MyBB (aka MyBulletinBoard) before 1.8.8 and MyBB Merge System before 1.8.8 might allow remote attackers to inject arbitrary web script or HTML via unspecified vectors.","status":"published","published":"2017-01-31T22:00:00Z","modified":"2024-08-06T02:50:38Z","updated_at":"2026-11-03T02:22:27.235814Z"}],"ghsa":[{"id":"GHSA-9cgj-rhjc-pjpc","title":"Cross-site scripting (XSS) vulnerability in the Users module in the Admin control panel in MyBB ...","description":"Cross-site scripting (XSS) vulnerability in the Users module in the Admin control panel in MyBB (aka MyBulletinBoard) before 1.8.8 and MyBB Merge System before 1.8.8 might allow remote attackers to inject arbitrary web script or HTML via unspecified vectors.","status":"published","published":"2022-05-17T03:02:24Z","modified":"2025-04-20T03:32:08Z","cvss":[{"version":"3.0","score":6.1,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:01:39.626411Z"}],"nvd":[{"id":"CVE-2016-9421","description":"Cross-site scripting (XSS) vulnerability in the Users module in the Admin control panel in MyBB (aka MyBulletinBoard) before 1.8.8 and MyBB Merge System before 1.8.8 might allow remote attackers to inject arbitrary web script or HTML via unspecified vectors.","status":"published","published":"2017-01-31T22:59:01.75Z","modified":"2026-06-17T00:56:00.423Z","cvss":[{"version":"3.0","score":6.1,"vector":"CVSS:3.0/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":"2026-11-02T14:03:35.029632Z"}]}}