CVE-2026-27936CWE-863

Discourse discloses restricted post-action counts to non-privileged users

Medium · published March 19, 2026

CVSS v4.0
6.9
EPSS
0%
Percentile
28.4
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, a restriction bypass allows restricted post action counts to be disclosed to non-privileged users through a carefully crafted request. 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 v4.0
6.9 · MEDIUM
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
EPSS
0.00359 · 28.4th percentile
Weakness
CWE-863 · Incorrect Authorization
Published
2026-03-19T21:42Z
EPSS history
Timeline
  • 19 MAR 21:42Z
    Discourse discloses restricted post-action counts to non-privileged users
    cvelistv5