{"action":"Upgrade mantisbt/mantisbt to 2.28.2 or later.","affected":[{"fixed":"2.28.2","introduced":"0"}],"component":"mantisbt/mantisbt","cve_ids":["CVE-2026-39960"],"ecosystem":"Packagist","epss":0.0023,"exploited":false,"fixed_versions":["2.28.2"],"ghsa_id":"GHSA-qj6w-v29q-4rgx","id":"tcs_01M5KF7BZME645WEY5843HYXBB","modified_at":"2026-09-10T03:51:06.801643399Z","published_at":"2026-05-11T19:34:32Z","references":["https://osv.dev/vulnerability/GHSA-qj6w-v29q-4rgx","https://github.com/mantisbt/mantisbt/security/advisories/GHSA-qj6w-v29q-4rgx","https://nvd.nist.gov/vuln/detail/CVE-2026-39960","https://github.com/mantisbt/mantisbt/commit/5fec0f448b7a7d7d539a6adb6dccceac4e4e4ab7","https://github.com/mantisbt/mantisbt","https://mantisbt.org/bugs/view.php?id=37003"],"severity":{"label":"medium","score":5.4},"sources":[{"source":"osv","source_id":"GHSA-qj6w-v29q-4rgx","url":"https://osv.dev/vulnerability/GHSA-qj6w-v29q-4rgx"}],"summary":"MantisBT is Vulnerable to Stored XSS in Custom Field Textarea Values"}