CVE-2026-33428 — Discourse Allows Unauthorized Access to Deleted Posts Index via Group Membership

CVE-2026-33428

Discourse Allows Unauthorized Access to Deleted Posts Index via Group Membership PUBLISHED

Description (CNA)

Discourse is an open-source discussion platform. Prior to versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2, a non-staff user with elevated group membership could access deleted posts belonging to any user due to an overly broad authorization check on the deleted posts index endpoint. Versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 contain a patch. No known workarounds are available.

Affected (CNA)

Vendor / product	Versions
discourse / discourse	affected = 2026.3.0-latest; affected >= 2026.2.0-latest, < 2026.2.1; affected >= 2026.1.0-latest, < 2026.1.2

CWE

CWE-863

References

https://github.com/discourse/discourse/security/advisories/GHSA-frcw-p4mc-x6mp

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.