CVE-2025-58055 | BDVDB-2026-296308 Detail
discoursediscourse
Description#
Discourse is an open-source community discussion platform. In versions 3.5.0 and below, the Discourse AI suggestion endpoints for topic “Title”, “Category”, and “Tags” allowed authenticated users to extract information about topics that they weren’t authorized to access. By modifying the “topic_id” value in API requests to the AI suggestion endpoints, users could target specific restricted topics. The AI model’s responses then disclosed information that the authenticated user couldn’t normally access. This issue is fixed in version 3.5.1. To workaround this issue, users can restrict group access to the AI helper feature through the "composer_ai_helper_allowed_groups" and "post_ai_helper_allowed_groups" site settings.
Impact#
Per CVSS v3.1: confidentiality impact low, integrity impact none, availability impact none. Attack vector: network.
Weaknesses#
References#
- https://github.com/discourse/discourse/security/advisories/GHSA-32v2-x274-vfhr
- https://github.com/discourse/discourse/commit/28d569cae9b33cd55d647bf41806106e33d975c9
- https://www.vicarius.io/vsociety/posts/cve-2025-58055-detect-discourse-vulnerability
- https://www.vicarius.io/vsociety/posts/cve-2025-58055-mitigate-discourse-vulnerability
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.
- Version 2Most recent update recorded in the CVE List.