CVE-2026-27162

MEDIUM
2026-02-26 [email protected]
4.9
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

Lifecycle Timeline

2
Analysis Generated
Mar 12, 2026 - 21:56 vuln.today
CVE Published
Feb 26, 2026 - 21:28 nvd
MEDIUM 4.9

Tags

Information Disclosure Discourse

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.

Analysis

Discourse's posts_nearby function fails to properly filter whispered posts based on user permissions, allowing authenticated users with high privileges to view confidential whispers intended only for specific recipients. The vulnerability stems from inadequate post-type filtering that bypasses guardian-based access controls. …

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Remediation

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Review data exposure and access controls.

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Priority Score

25
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +24
POC: 0

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CVE-2026-27162 vulnerability details – vuln.today
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