{"id":"CVE-2021-33557","aliases":["EUVD-2021-20249","GHSA-52cx-vphc-jmjm"],"status":"published","title":"MantisBT allows XSS in manage_custom_field_edit_page.php","description":"An XSS issue was discovered in manage_custom_field_edit_page.php in MantisBT before 2.25.2. Unescaped output of the return parameter allows an attacker to inject code into a hidden input field.","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":"2026-11-10","score":0.01825,"percentile":0.78977,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-79"],"published":"2021-06-17T18:14:52Z","modified":"2026-10-24T10:30:21Z","fixes":[{"ecosystem":"Packagist","package":"mantisbt/mantisbt","fixed_in":["2.25.2"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Packagist","package":"mantisbt/mantisbt","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"2.25.1"},{"fixed":"2.25.2"}]}]},{"source":"osv","ecosystem":"Packagist","package":"mantisbt/mantisbt","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.25.2"}]}],"versions":["2.10.0","2.10.1","2.11.0","2.11.1","2.12.0","2.12.1","2.12.2","2.13.0","2.13.1","2.13.2","2.14.0","2.15.0","2.15.1","2.16.0","2.16.1","2.17.0","2.17.1","2.17.2","2.18.0","2.18.1","2.19.0","2.19.1","2.20.0","2.20.1","2.21.0","2.21.1","2.21.2","2.21.3","2.22.0","2.22.1","2.22.2","2.23.0","2.23.1","2.24.0","2.24.1","2.24.2","2.24.3","2.24.4","2.24.5","2.25.0","2.25.1","2.3.0","2.3.1","2.3.2","2.3.3","2.4.0","2.4.1","2.4.2","2.5.0","2.5.1","2.5.2","2.6.0","2.7.0","2.7.1","2.8.0","2.8.1","2.9.0","2.9.1"]}],"products":[{"vendor":"mantisbt","product":"mantisbt"}],"references":[{"url":"https://mantisbt.org/bugs/view.php?id=28552","tags":["x_refsource_MISC","x_transferred","Exploit","Vendor Advisory","evidence","web"]},{"url":"https://mantisbt.org/blog/archives/mantisbt/699","tags":["x_refsource_CONFIRM","x_transferred","Release Notes","Vendor Advisory","advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-33557","tags":["advisory"]},{"url":"https://github.com/mantisbt/mantisbt/commit/03dd37221e636f8959b8cb9fbad84f38f9582356","tags":["web"]},{"url":"https://github.com/advisories/GHSA-52cx-vphc-jmjm"},{"url":"https://github.com/mantisbt/mantisbt","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2021-33557","description":"An XSS issue was discovered in manage_custom_field_edit_page.php in MantisBT before 2.25.2. Unescaped output of the return parameter allows an attacker to inject code into a hidden input field.","status":"published","published":"2021-06-17T18:14:52Z","modified":"2024-08-03T23:50:43.162Z","updated_at":"2026-11-02T14:33:10.204494Z"}],"euvd":[{"id":"EUVD-2021-20249","description":"An XSS issue was discovered in manage_custom_field_edit_page.php in MantisBT before 2.25.2. Unescaped output of the return parameter allows an attacker to inject code into a hidden input field.","status":"published","published":"2021-06-17T18:14:52Z","modified":"2024-08-03T23:50:43Z","updated_at":"2026-11-03T03:24:34.304953Z"}],"ghsa":[{"id":"GHSA-52cx-vphc-jmjm","title":"MantisBT allows XSS in manage_custom_field_edit_page.php","description":"An XSS issue was discovered in manage_custom_field_edit_page.php in MantisBT before 2.25.2. Unescaped output of the return parameter allows an attacker to inject code into a hidden input field.","status":"published","published":"2022-05-24T19:05:35Z","modified":"2025-05-29T19:35:11Z","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"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:38:44.991725Z"}],"nvd":[{"id":"CVE-2021-33557","description":"An XSS issue was discovered in manage_custom_field_edit_page.php in MantisBT before 2.25.2. 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Unescaped output of the return parameter allows an attacker to inject code into a hidden input field.","status":"published","published":"2021-06-17T19:15:07.967Z","modified":"2026-10-24T10:30:21.558171643Z","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"}],"updated_at":"2026-11-02T15:44:20.13324Z"},{"id":"GHSA-52cx-vphc-jmjm","title":"MantisBT allows XSS in manage_custom_field_edit_page.php","description":"An XSS issue was discovered in manage_custom_field_edit_page.php in MantisBT before 2.25.2. Unescaped output of the return parameter allows an attacker to inject code into a hidden input field.","status":"published","published":"2022-05-24T19:05:35Z","modified":"2025-05-29T19:57:17.679876Z","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"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:46:37.864461Z"}]}}