{"id":"CVE-2026-42071","aliases":["EUVD-2026-33027","GHSA-pw5x-2mf9-3xc8"],"status":"published","title":"MantisBT: Private Bugnote Attachment Content Leak via REST API","description":"Mantis Bug Tracker (MantisBT) is an open source issue tracker. From 2.23.0 to 2.28.1, a missing authorization check in MantisBT's file visibility function allows any authenticated user (REPORTER+) to download attachments on private bugnotes they should not be able to access, via the REST API endpoint GET /api/rest/issues/{id}/files and SOAP API mc_issue_attachment_get endpoint. This vulnerability is fixed in 2.28.2.","severity":{"version":"4.0","score":7.2,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.0026,"percentile":0.17911,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-862"],"published":"2026-05-11T19:39:43Z","modified":"2026-10-28T02:30:37Z","fixes":[{"ecosystem":"Packagist","package":"mantisbt/mantisbt","fixed_in":["2.28.2"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Packagist","package":"mantisbt/mantisbt","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.23.0"},{"last_affected":"2.28.1"},{"fixed":"2.28.2"}]}]},{"source":"osv","ecosystem":"Packagist","package":"mantisbt/mantisbt","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.23.0"},{"fixed":"2.28.2"}]}],"versions":["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","2.25.2","2.25.3","2.25.4","2.25.5","2.25.6","2.25.7","2.25.8","2.26.0","2.26.1","2.26.2","2.26.3","2.26.4","2.27.0","2.27.1","2.27.2","2.27.3","2.28.0","2.28.1"]}],"products":[{"vendor":"mantisbt","product":"mantisbt"}],"references":[{"url":"https://github.com/mantisbt/mantisbt/security/advisories/GHSA-pw5x-2mf9-3xc8","tags":["x_refsource_CONFIRM","advisory","web"]},{"url":"https://github.com/mantisbt/mantisbt/commit/029d9d203d9e4ae96b3e59d552fa7395cc1e5071","tags":["x_refsource_MISC","fix","web"]},{"url":"https://mantisbt.org/bugs/view.php?id=27039","tags":["x_refsource_MISC","web"]},{"url":"https://mantisbt.org/bugs/view.php?id=36985","tags":["x_refsource_MISC","web"]},{"url":"https://mantisbt.org/bugs/view.php?id=37092","tags":["x_refsource_MISC","web"]},{"url":"https://github.com/advisories/GHSA-xjmx-cprh-646r","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-42071","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-pw5x-2mf9-3xc8"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42071.json","tags":["advisory"]},{"url":"https://github.com/mantisbt/mantisbt","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-42071","title":"MantisBT: Private Bugnote Attachment Content Leak via REST API","description":"Mantis Bug Tracker (MantisBT) is an open source issue tracker. From 2.23.0 to 2.28.1, a missing authorization check in MantisBT's file visibility function allows any authenticated user (REPORTER+) to download attachments on private bugnotes they should not be able to access, via the REST API endpoint GET /api/rest/issues/{id}/files and SOAP API mc_issue_attachment_get endpoint. This vulnerability is fixed in 2.28.2.","status":"published","published":"2026-05-28T20:29:20.361Z","modified":"2026-05-29T13:56:52.065Z","cvss":[{"version":"4.0","score":7.2,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N","level":"high","assessor":"cna"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T13:40:23.731501Z"}],"euvd":[{"id":"EUVD-2026-33027","description":"Mantis Bug Tracker (MantisBT) is an open source issue tracker. From 2.23.0 to 2.28.1, a missing authorization check in MantisBT's file visibility function allows any authenticated user (REPORTER+) to download attachments on private bugnotes they should not be able to access, via the REST API endpoint GET /api/rest/issues/{id}/files and SOAP API mc_issue_attachment_get endpoint. This vulnerability is fixed in 2.28.2.","status":"published","published":"2026-05-28T20:29:20Z","modified":"2026-05-29T13:56:52Z","cvss":[{"version":"4.0","score":7.2,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N","level":"high"}],"updated_at":"2026-11-02T18:21:01.215325Z"}],"ghsa":[{"id":"GHSA-pw5x-2mf9-3xc8","title":"MantisBT has a Private Bugnote Attachment Content Leak via REST API","description":"A missing authorization check in MantisBT's file visibility function allows any authenticated user (REPORTER+) to download attachments on private bugnotes they should not be able to access, via the REST API endpoint GET /api/rest/issues/{id}/files and SOAP API mc_issue_attachment_get endpoint.\n\n### Impact\n- REPORTER (access level 25) can view file attachments that were uploaded to private bugnotes by DEVELOPER/MANAGER/ADMIN users\n- Private bugnotes are intended for internal developer discussion; their attachments (logs, screenshots, patches) should be equally protected\n- The web UI is NOT affected — it filters through bugnote_get_all_visible_bugnotes() first\n\n### Patches\n- 029d9d203d9e4ae96b3e59d552fa7395cc1e5071\n\n### Workarounds\nNone\n\n### Credits\nThanks to the following security researchers for independently discovering and responsibly reporting the issue.\n- Vishal Shukla \n- Tristan Madani (@TristanInSec) from Talence Security \n- Tang Cheuk Hei (@siunam321) \n\nThis advisory's contents was largely copied from Tristan's well-written report.","status":"published","published":"2026-05-11T19:39:43Z","modified":"2026-06-09T10:23:53Z","cvss":[{"version":"4.0","score":7.2,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N","level":"high"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T14:40:22.540562Z"}],"nvd":[{"id":"CVE-2026-42071","description":"Mantis Bug Tracker (MantisBT) is an open source issue tracker. From 2.23.0 to 2.28.1, a missing authorization check in MantisBT's file visibility function allows any authenticated user (REPORTER+) to download attachments on private bugnotes they should not be able to access, via the REST API endpoint GET /api/rest/issues/{id}/files and SOAP API mc_issue_attachment_get endpoint. This vulnerability is fixed in 2.28.2.","status":"published","published":"2026-05-28T21:16:30.017Z","modified":"2026-06-17T10:47:23.2Z","cvss":[{"version":"4.0","score":7.2,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high","assessor":"secondary"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T14:12:21.244426Z"}],"osv":[{"id":"CVE-2026-42071","title":"MantisBT: Private Bugnote Attachment Content Leak via REST API","description":"Mantis Bug Tracker (MantisBT) is an open source issue tracker. From 2.23.0 to 2.28.1, a missing authorization check in MantisBT's file visibility function allows any authenticated user (REPORTER+) to download attachments on private bugnotes they should not be able to access, via the REST API endpoint GET /api/rest/issues/{id}/files and SOAP API mc_issue_attachment_get endpoint. This vulnerability is fixed in 2.28.2.","status":"published","published":"2026-05-28T20:29:20.361Z","modified":"2026-10-28T02:30:37.221671845Z","cvss":[{"version":"4.0","score":7.2,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N","level":"high"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T15:45:04.117819Z"},{"id":"GHSA-pw5x-2mf9-3xc8","title":"MantisBT has a Private Bugnote Attachment Content Leak via REST API","description":"A missing authorization check in MantisBT's file visibility function allows any authenticated user (REPORTER+) to download attachments on private bugnotes they should not be able to access, via the REST API endpoint GET /api/rest/issues/{id}/files and SOAP API mc_issue_attachment_get endpoint.\n\n### Impact\n- REPORTER (access level 25) can view file attachments that were uploaded to private bugnotes by DEVELOPER/MANAGER/ADMIN users\n- Private bugnotes are intended for internal developer discussion; their attachments (logs, screenshots, patches) should be equally protected\n- The web UI is NOT affected — it filters through bugnote_get_all_visible_bugnotes() first\n\n### Patches\n- 029d9d203d9e4ae96b3e59d552fa7395cc1e5071\n\n### Workarounds\nNone\n\n### Credits\nThanks to the following security researchers for independently discovering and responsibly reporting the issue.\n- Vishal Shukla \n- Tristan Madani (@TristanInSec) from Talence Security \n- Tang Cheuk Hei (@siunam321) \n\nThis advisory's contents was largely copied from Tristan's well-written report.","status":"published","published":"2026-05-11T19:39:43Z","modified":"2026-09-10T03:51:06.756563086Z","cvss":[{"version":"4.0","score":7.2,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N","level":"high"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T15:46:53.700556Z"}]}}