CVE-2026-32951

MEDIUM4.3EPSS 0.05%

Discourse: Authorization bypass in oneboxer via user-controlled category id

Published: 4/7/2026Modified: 4/7/2026

Also known as:GHSA-v93g-8f4f-4rgmBIT-discourse-2026-32951

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.

Affected packages (1)

Bitnami/discourse>= 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

References (3)

WEBhttps://github.com/discourse/discourse/commit/0b4e6ff170362823d1cfe2a1a096785d0d77ee83
WEBhttps://github.com/discourse/discourse/security/advisories/GHSA-v93g-8f4f-4rgm
WEBhttps://nvd.nist.gov/vuln/detail/CVE-2026-32951