CVE-2025-64528CWE-202

Users are able to find users by name even when `enable_names` is off

Medium · published December 30, 2025

CVSS v4.0
6.3
EPSS
0%
Percentile
20.2
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
6.3 · MEDIUM
Vector
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
EPSS
0.00287 · 20.2th percentile
Weakness
CWE-202 · Exposure of Sensitive Information Through Data Queries
Published
2025-12-30T16:04Z
EPSS history
Timeline
  • 30 DEC 16:04Z
    Users are able to find users by name even when `enable_names` is off
    cvelistv5