CVE-2026-32620

MEDIUM

Discourse: Missing post-level authorization allows whisper metadata disclosure

Title source: cna
STIX 2.1

Description

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.

References (2)

Core 2

Scores

CVSS v3 4.3
EPSS 0.0020
EPSS Percentile 10.0%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-200
Status published
Products (5)
discourse/discourse 2026.3.0 (2 CPE variants)
discourse/discourse 2026.1.0 - 2026.1.3
discourse/discourse >= 2026.1.0-latest, < 2026.1.3
discourse/discourse >= 2026.2.0-latest, < 2026.2.2
discourse/discourse >= 2026.3.0-latest, < 2026.3.0
Published Mar 31, 2026
Tracked Since Mar 31, 2026