CVE-2026-32951CWE-200

Discourse: Authorization bypass in oneboxer via user-controlled category 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, an authenticated user can obtain shared draft topic titles by sending an inline onebox request with a category_id parameter matching the shared drafts category. 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
2026-03-31T17:41Z
EPSS history
Timeline
  • 31 MAR 17:41Z
    Discourse: Authorization bypass in oneboxer via user-controlled category id
    cvelistv5