CVE-2026-27162 — DIscourse doesn't prevent whispers to leak in excerpts

CVE-2026-27162

DIscourse doesn't prevent whispers to leak in excerpts PUBLISHED

Description (CNA)

Discourse is an open source discussion platform. Prior to versions 2025.12.2, 2026.1.1, and 2026.2.0, `posts_nearby` was checking topic access but then returning all posts regardless of type, including whispers that should only be visible to whisperers. Use `Post.secured(guardian)` to properly filter post types based on user permissions. Versions 2025.12.2, 2026.1.1, and 2026.2.0 patch the issue. No known workarounds are available.

Affected (CNA)

Vendor / product	Versions
discourse / discourse	affected < 2025.12.2; affected >= 2026.1.0-latest, < 2026.1.1; affected >= 2026.2.0-latest, < 2026.2.0

CWE

CWE-200

References

https://github.com/discourse/discourse/security/advisories/GHSA-gffm-43j4-372w

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.