CVE-2026-33355
Discourse filters whisper posts from private-posts feed
CVSS Score
6.5
EPSS Score
0.0%
EPSS Percentile
8th
Discourse is an open-source discussion platform. Prior to versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2, the `/private-posts` endpoint did not apply post-type visibility filtering, allowing regular PM participants to see whisper posts in PM topics they had access to. Versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 contain a patch. No known workarounds are available.
| CWE | CWE-200 |
| Vendor | discourse |
| Product | discourse |
| Published | Mar 19, 2026 |
| Last Updated | Mar 20, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
Affected Versions
discourse / discourse
>= 2026.1.0-latest, < 2026.1.2 >= 2026.2.0-latest, < 2026.2.1 = 2026.3.0-latest
References
github.com: https://github.com/discourse/discourse/security/advisories/GHSA-g4v5-6gfp-3hjq github.com: https://github.com/discourse/discourse/commit/84e5865a279716c6866e8c0648d1d8b42320603c github.com: https://github.com/discourse/discourse/commit/d25b8ee9ee182dbb34e92b34e39878ce4d59bcdc github.com: https://github.com/discourse/discourse/commit/d2f317271ad7638f1e2791905472ebd9370946d1