CVE-2026-33424CWE-863

PM access granted through invites after access revocation

Medium · published March 20, 2026

CVSS v3.1
5.9
EPSS
0%
Percentile
24.2
In the wild
Unconfirmed
What it is

Discourse is an open-source discussion platform. Prior to versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2, an attacker can grant access to a private message topic through invites even after they lose access to that PM. Versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 contain a patch. No known workarounds are available.

The record
Technical detail
CVSS v3.1
5.9 · MEDIUM
Vector
CVSS:3.1/AV:A/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:L
CVSS v4.0
Not supplied
EPSS
0.00324 · 24.2th percentile
Weakness
CWE-863 · Incorrect Authorization
Published
2026-03-20T23:08Z
EPSS history
Timeline
  • 20 MAR 23:08Z
    PM access granted through invites after access revocation
    cvelistv5