PT-2026-26424 · Discourse · Discourse

Davidtaylorhq · Published 2026-03-19 · Updated 2026-03-19 · CVE-2026-33355

NVD

CVSS v3.1

6.5

Medium

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

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.

Fix

Information Disclosure

Weakness Enumeration

CWE-200

Related Identifiers

CVE-2026-33355

Affected Products

Discourse

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2026-33355 · Security Note
• https://github.com/discourse/discourse/commit/d2f317271ad7638f1e2791905472ebd9370946d1 · Note
• https://github.com/discourse/discourse/commit/84e5865a279716c6866e8c0648d1d8b42320603c · Note
• https://github.com/discourse/discourse/commit/d25b8ee9ee182dbb34e92b34e39878ce4d59bcdc · Note
• https://github.com/discourse/discourse/security/advisories/GHSA-g4v5-6gfp-3hjq · Note