CVE-2026-27152

LOW

Discourse <2025.12.2 - Auth Bypass

Title source: llm

Description

Discourse is an open source discussion platform. Prior to versions 2025.12.2, 2026.1.1, and 2026.2.0, DM communication-preference bypass when adding members via `Chat::AddUsersToChannel` — a user could add targets who have blocked/ignored/muted them to an existing DM channel, bypassing per-recipient PM restrictions that are enforced during DM channel creation. Versions 2025.12.2, 2026.1.1, and 2026.2.0 patch the issue. No known workarounds are available.

References (1)

[Vendor Advisory] https://github.com/discourse/discourse/security/advisories/GHSA-f8ff-pxg3-7967

Scores

CVSS v3 3.8

EPSS 0.0003

EPSS Percentile 7.2%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N

Classification

CWE

CWE-284

Status published

Affected Products (2)

discourse/discourse < 2025.12.2

discourse/discourse

Timeline

Published Feb 26, 2026

Tracked Since Feb 27, 2026