CVE-2026-57447
Discourse Doc Categories: Doc category index refresh leaks private topic titles
CVSS Score
4.3
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-200 |
| Vendor | discourse |
| Product | discourse-doc-categories |
| Published | Oct 16, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None
Affected Versions
discourse / discourse-doc-categories
< b15d4de02ad29d7c9525346afee51fef4a2c605a