CVE-2026-32951
Discourse: Authorization bypass in oneboxer via user-controlled category id
4.3
MEDIUM
CVSS 3.1
EPSS 0.05%
Description
Discourse is an open-source discussion platform. From versions 2026.1.0 to before 2026.1.3, and 2026.2.0 to before 2026.2.2, 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.
How to fix CVE-2026-32951
To remediate CVE-2026-32951, upgrade the affected package to a fixed version below.
- —upgrade to 2026.1.3 or later
Is CVE-2026-32951 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- >= 2026.1.0, < 2026.1.3, >= 2026.2.0, < 2026.2.2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N |