{"id":"CVE-2026-33548","summary":"MantisBT has Stored HTML Injection / XSS when displaying Tags in Timeline","details":"Mantis Bug Tracker (MantisBT) is an open source issue tracker. In version 2.28.0, improper escaping of tag names retrieved from History in Timeline (my_view_page.php) allows an attacker to inject HTML and, if CSP settings permit, achieve execution of arbitrary JavaScript, when displaying a tag that has been renamed or deleted. Version 2.28.1 contains a patch. Workarounds include editing offending History entries (using SQL) and wrapping `$this-\u003etag_name` in a string_html_specialchars() call in IssueTagTimelineEvent::html().","aliases":["GHSA-73vx-49mv-v8w5"],"modified":"2026-08-12T03:51:16.417885918Z","published":"2026-03-23T19:15:18.891Z","database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-79"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33548.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33548.json"},{"type":"ADVISORY","url":"https://github.com/mantisbt/mantisbt/security/advisories/GHSA-73vx-49mv-v8w5"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-33548"},{"type":"FIX","url":"https://github.com/mantisbt/mantisbt/commit/f32787c14d4518476fe7f05f992dbfe6eaccd815"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/mantisbt/mantisbt","events":[{"introduced":"75ed0962f60435d222a04343e60ba319e12093fd"},{"fixed":"f32787c14d4518476fe7f05f992dbfe6eaccd815"}],"database_specific":{"source":["CPE_STRING","REFERENCES"],"cpe":"cpe:2.3:a:mantisbt:mantisbt:2.28.0:*:*:*:*:*:*:*","extracted_events":[{"introduced":"2.28.0"},{"last_affected":"2.28.0"}]}}],"versions":["2.28.0","= 2.28.0","release-2.28.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-33548.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"}]}