CVE-2026-52847

描述

MantisBT 2.28.3 and earlier contains six reflected XSS injection points in `/admin/install.php`. User-supplied parameters are echoed into HTML without escaping via print_test_result(). No authentication is required. A Content Security Policy (script-src 'self') prevents inline JavaScript execution, but the CSP is missing a form-action directive, allowing exploitation via credential-phishing form injection and <meta> open redirects. ### Impact - Credential phishing: Attacker crafts a URL that renders a fake login form on the real MantisBT admin page. Admin credentials are submitted to an attacker-controlled server. - Open redirect: Victim is silently redirected to a phishing or malware site. - UI manipulation: CSS injection can hide legitimate page content and overlay attacker-controlled HTML, enabling social engineering. ### Patches - https://github.com/mantisbt/mantisbt/commit/0f32ceabadc745239754962df91a51d5d51e3fd7 - https://github.com/mantisbt/mantisbt/commit/f2191a0d8ce438bf74171d496cf721dae025a5c0 ### Workarounds Remove the `/admin` directory, as [recommended in the Admin Guide](https://mantisbt.org/docs/master/en-US/Admin_Guide/html-desktop/#admin.install.postcommon) ### Resources - https://mantisbt.org/bugs/view.php?id=37103 - related advisory [GHSA-vcrw-4xvv-jh49](https://github.com/mantisbt/mantisbt/security/advisories/GHSA-vcrw-4xvv-jh49) ### Credits McCaulay Hudson (@_McCaulay) of watchTowr

如何修補 CVE-2026-52847

要修補 CVE-2026-52847,請將受影響套件升級到下列已修補版本。

• —升級至 2.28.4 或更新版本

CVE-2026-52847 正在被利用嗎?

目前沒有被利用訊號。CVE-2026-52847 既不在 CISA KEV 也沒有最新的 EPSS 分數。

受影響套件(1)

• from 0, < 2.28.4

CVSS 分數

參考連結(5)

• PATCHgithub.com/mantisbt/mantisbt
• WEBgithub.com/mantisbt/mantisbt/commit/0f32ceabadc745239754962df91a51d5d51e3fd7
• WEBgithub.com/mantisbt/mantisbt/commit/f2191a0d8ce438bf74171d496cf721dae025a5c0
• WEBgithub.com/mantisbt/mantisbt/security/advisories/GHSA-77x8-3v3h-hrhv