CVE-2026-27162
Medium
Description
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.
SeverityMedium
CVSS4.9
Exploit probability—
Product
Discourse
PublishedFeb 26, 2026
First seenFeb 26, 2026
Weakness typeCWE-200Sensitive information exposure
How to fix
Update
- discourse discourse2025.12.2, 2026.1.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| discourse discourse | v < 2025.12.2, 2026.1.0 ≤ v < 2026.1.1, 2026.2.0 | 2025.12.2, 2026.1.1 |
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