Users are able to find users by name even when `enable_names` is off
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.
01
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2025-64528US | medium5.3 | — | ||
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 v… | ||||
02
references
External citations — patches, advisories, analysis.
- https://github.com/discourse/discourse/commit/1cb45b8b287597085e3514596ffb1d9b41938f81FIX
- https://github.com/discourse/discourse/commit/6192f55629624925595dae14364fd86cac0f09dfFIX
- https://github.com/discourse/discourse/commit/e936a523b5900a9d866d23ea3da904ba12bb0fb2FIX
- https://github.com/discourse/discourse/security/advisories/GHSA-c59w-jwx7-34v4ADVISORY
- https://nvd.nist.gov/vuln/detail/CVE-2025-64528WEB
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