Description

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.

INFO

Published Date :

2026-03-19T22:01:42.387Z

Last Modified :

2026-03-20T18:10:20.981Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2026-33355 vulnerability.

Vendors Products
Discourse
  • Discourse
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-33355.

URL Resource
https://github.com/discourse/discourse/commit/84e5865a279716c6866e8c0648d1d8b42320603c cve-icon cve-icon
https://github.com/discourse/discourse/commit/d25b8ee9ee182dbb34e92b34e39878ce4d59bcdc cve-icon cve-icon
https://github.com/discourse/discourse/commit/d2f317271ad7638f1e2791905472ebd9370946d1 cve-icon cve-icon
https://github.com/discourse/discourse/security/advisories/GHSA-g4v5-6gfp-3hjq cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact