Users are able to find users by name even when `enable_names` is off
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.3epss 0.3%
exploitation probability
0.3%top 83% of all CVEs
observed exploitation
nono source reports it
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:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N
Affected products
discourse · discourseReferences
https://github.com/discourse/discourse/commit/1cb45b8b287597085e3514596ffb1d9b41938f81https://github.com/discourse/discourse/commit/6192f55629624925595dae14364fd86cac0f09dfhttps://github.com/discourse/discourse/commit/e936a523b5900a9d866d23ea3da904ba12bb0fb2https://github.com/discourse/discourse/security/advisories/GHSA-c59w-jwx7-34v4