Medium 6.3Published Dec 30, 2025

CVE-2025-64528Users are able to find users by name even when `enable_names` is off

Updated under an hour ago (Oct 26, 2026, 11:50 PM ET)

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It affects discourse. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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: 6.3 MEDIUM (v4.0, CNA)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
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: GitHub_M
NVD analysis: Analyzed
Record last updated: Dec 30, 2025
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

discourse discourse discourse:discourse (from the name)	before 3.5.3; from 2025.11.0-latest, < 2025.11.1; from 2025.12.0-latest, < 2025.12.0	CNA record
discourse discourse discourse:discourse	before 3.5.3; 2025.11.0; 2025.12.0	NVD

References

References

https://github.com/discourse/discourse/security/advisories/GHSA-c59w-jwx7-34v4	x-refsource-confirm, third-party-advisory
https://github.com/discourse/discourse/commit/1cb45b8b287597085e3514596ffb1d9b41938f81	x-refsource-misc, patch
https://github.com/discourse/discourse/commit/6192f55629624925595dae14364fd86cac0f09df	x-refsource-misc, patch
https://github.com/discourse/discourse/commit/e936a523b5900a9d866d23ea3da904ba12bb0fb2	x-refsource-misc, patch

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.