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CVE-2026-33355

nvd nist
Published: Mar 19, 2026Modified: Jun 17, 2026

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6.5
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Exploitability: 2.8 / Impact: 3.6
Source: security-advisories@github.com (Secondary)

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.

Affected (3)

Products: Discourse: Discourse
Discourse
1 product
Discourse
Configuration A
3 vulnerable
Vulnerable SoftwareAffected Versions
Discourse
Discourse
From 2026.1.0 to 2026.1.2
Discourse
From 2026.2.0 to 2026.2.1
Discourse
Version 2026.3.0

Related CWEs

CWE-200
Exposure of Sensitive Information to an Unauthorized Actor
The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.

References (4)

Source: security-advisories@github.com
Patch
Source: security-advisories@github.com
Patch
Source: security-advisories@github.com
Patch
Source: security-advisories@github.com
Vendor Advisory

Timeline

No history available yet.