CVE-2025-64528Discourse is an open source discussion platform.
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 5.3 MEDIUM (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- Weakness (CWE)
- CWE-202
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Analyzed
- Record last updated
- Jun 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
discourse discourse discourse:discourse | before 3.5.3; 2025.11.0; 2025.12.0 | NVD |
References
- https://github.com/discourse/discourse/commit/1cb45b8b287597085e3514596ffb1d9b41938f81patch
- https://github.com/discourse/discourse/commit/6192f55629624925595dae14364fd86cac0f09dfpatch
- https://github.com/discourse/discourse/commit/e936a523b5900a9d866d23ea3da904ba12bb0fb2patch
- https://github.com/discourse/discourse/security/advisories/GHSA-c59w-jwx7-34v4third-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.