要点
- CVE-2026-42071 は mantisbt/mantisbt に影響する深刻度「高」 (CVSS 7.2) の脆弱性です。
- 今後30日間に悪用される確率（EPSS）：0.26%（全脆弱性の 17.8% より高い）。
- 対処：2.28.2 以降に更新してください。
概要
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.
Impact
- REPORTER (access level 25) can view file attachments that were uploaded to private bugnotes by DEVELOPER/MANAGER/ADMIN users
- Private bugnotes are intended for internal developer discussion; their attachments (logs, screenshots, patches) should be equally protected
- The web UI is NOT affected — it filters through bugnote_get_all_visible_bugnotes() first
Patches
- 029d9d203d9e4ae96b3e59d552fa7395cc1e5071
Workarounds
None
Credits
Thanks to the following security researchers for independently discovering and responsibly reporting the issue.
- Vishal Shukla
- Tristan Madani (@TristanInSec) from Talence Security
- Tang Cheuk Hei (@siunam321)
This advisory's contents was largely copied from Tristan's well-written report.
NVD の説明
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.
これらの製品をお使いですか？サイトをスキャンして、脆弱なバージョンが公開されていないか確認しましょう。
無料でサイトをスキャン