CVE-2026-32618CWE-200

Discourse: Unauthorized channel membership inference via excluded_memberships_channel_id

Medium · published March 31, 2026

CVSS v3.1
4.3
EPSS
0%
Percentile
25.7
In the wild
Unconfirmed
What it is

Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.3, 2026.2.0-latest to before 2026.2.2, and 2026.3.0-latest to before 2026.3.0, there is possible channel membership inference from chat user search without authorization. This issue has been patched in versions 2026.1.3, 2026.2.2, and 2026.3.0.

The record
Technical detail
CVSS v3.1
4.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00335 · 25.7th percentile
Weakness
CWE-200 · Exposure of Sensitive Information to an Unauthorized Actor
Published
2026-03-31T17:40Z
EPSS history
Timeline
  • 31 MAR 17:40Z
    Discourse: Unauthorized channel membership inference via excluded_memberships_channel_id
    cvelistv5