{"action":"Upgrade mantisbt/mantisbt to 2.28.2 or later.","affected":[{"fixed":"2.28.2","introduced":"0"}],"component":"mantisbt/mantisbt","cve_ids":["CVE-2026-34754"],"ecosystem":"Packagist","epss":0.00325,"exploited":false,"fixed_versions":["2.28.2"],"ghsa_id":"GHSA-h4x5-gvx6-3rwc","id":"tcs_01M5KF3AV6GPV32GRA1XD09632","modified_at":"2026-09-10T03:50:46.965418816Z","published_at":"2026-05-11T19:33:06Z","references":["https://osv.dev/vulnerability/GHSA-h4x5-gvx6-3rwc","https://github.com/mantisbt/mantisbt/security/advisories/GHSA-h4x5-gvx6-3rwc","https://nvd.nist.gov/vuln/detail/CVE-2026-34754","https://github.com/mantisbt/mantisbt/commit/b262b4d2835b81394d75356dead66e52a6275206","https://github.com/mantisbt/mantisbt","https://mantisbt.org/bugs/view.php?id=36976"],"severity":{"label":"medium","score":4.3},"sources":[{"source":"osv","source_id":"GHSA-h4x5-gvx6-3rwc","url":"https://osv.dev/vulnerability/GHSA-h4x5-gvx6-3rwc"}],"summary":"MantisBT has an Authorization Bypass that Allows Uploading Attachments to Private Issues via REST API"}