CVE-2026-32620CWE-200

Discourse: Missing post-level authorization allows whisper metadata disclosure

Medium · published March 31, 2026

CVSS v4.0
5.3
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, non-staff users could access read receipt information for staff-only posts they weren't supposed to see. No post content was exposed, only metadata about who read the post and when. This issue has been patched in versions 2026.1.3, 2026.2.2, and 2026.3.0.

The record
Technical detail
CVSS v4.0
5.3 · MEDIUM
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
EPSS
0.00335 · 25.7th percentile
Weakness
CWE-200 · Exposure of Sensitive Information to an Unauthorized Actor
Published
2026-03-31T17:41Z
EPSS history
Timeline
  • 31 MAR 17:41Z
    Discourse: Missing post-level authorization allows whisper metadata disclosure
    cvelistv5