CVE-2025-64528
Users are able to find users by name even when `enable_names` is off
- State
- Published
- Severity
- 6.3 Medium
- Published
- Dec 30, 2025
- Updated
- Dec 30, 2025
- Reserved
- Nov 5, 2025
Description
Discourse is an open source discussion platform. Prior to versions 3.5.3, 2025.11.1, and 2025.12.0, an attacker who knows part of a username can find the user and their full name via UI or API, even when `enable_names` is disabled. Versions 3.5.3, 2025.11.1, and 2025.12.0 contain a fix.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.3 Medium | CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N | GitHub_M |
Weaknesses
- CWE-202 Exposure of Sensitive Information Through Data Queries
Affected Products
| Product | Versions |
|---|---|
discoursediscourse |
|
References
- https://github.com/discourse/discourse/security/advisories/GHSA-c59w-jwx7-34v4
- https://github.com/discourse/discourse/commit/1cb45b8b287597085e3514596ffb1d9b41938f81
- https://github.com/discourse/discourse/commit/6192f55629624925595dae14364fd86cac0f09df
- https://github.com/discourse/discourse/commit/e936a523b5900a9d866d23ea3da904ba12bb0fb2
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