Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-57447— Discourse Doc Categories: Doc category index refresh leaks private topic titles

Quick assessment

Affected
discourse discourse-doc-categories
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Discourse Doc Categories 是一个用于将 Discourse 主题组织为文档的插件。在经确认的源代码修复之前，文档类别索引刷新功能在解析私聊消息或受限类别主题的链接标题时，未执行查看者的权限验证。任何能够编辑索引主题的用户均可利用此行为获取其无权查看的主题标题，尽管该漏洞公告并未确认可访问主题的具体内容。该漏洞已通过提交 b15d4de02ad29d7c9525346afee51fef4a2c605a 修复。

CVSS 4.3 · Medium EPSS 0.18% · P7

Possible ATT&CK Techniques 1 AI

T1615 · Group Policy Discovery

Affected Version Matrix 1

VendorProduct Version RangeStatus
discourse discourse-doc-categories < b15d4de02ad29d7c9525346afee51fef4a2c605a affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-57447

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Discourse Doc Categories: Doc category index refresh leaks private topic titles
Source: CVE Program / CVE List V5
Vulnerability Description
Discourse Doc Categories is a plugin for organizing Discourse topics as documentation. Prior to the verified source fix, the doc category index refresh resolves linked titles for private messages or restricted category topics without enforcing the viewer's authorization. A user who can edit the index topic can use this behavior to learn titles that the user is not authorized to view, although the advisory does not establish access to topic contents. This vulnerability is addressed by commit b15d4de02ad29d7c9525346afee51fef4a2c605a.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
信息暴露
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
discourse discourse-doc-categories < b15d4de02ad29d7c9525346afee51fef4a2c605a -

II. Public POCs for CVE-2026-57447

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-57447

请登录查看更多情报信息。

Patches & Fixes for CVE-2026-57447 (1)

Vendor Advisories for CVE-2026-57447 (1)

IV. Related Vulnerabilities

Same vendor: discourse
Same weakness: CWE-200

V. Comments for CVE-2026-57447

No comments yet

Leave a comment