PT-2026-48987 · Discourse · Discourse

Published 2026-06-12 · Updated 2026-06-12 · CVE-2026-47263

NVD

CVSS v3.1

4.3

Medium

Base vector

AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.4, 2026.3.0-latest to before 2026.3.1, and 2026.4.0-latest to before 2026.4.1, the MessageBus.publish call for /web hook events/ in Jobs::RedeliverWebHookEvents did not pass group ids, leaving the channel readable by any authenticated user (or anonymous user on instances where login required is disabled). Webhook IDs are sequential integers and trivially enumerable. This issue has been patched in versions 2026.1.4, 2026.3.1, 2026.4.1, and 2026.5.0-latest.1.

Fix

Information Disclosure

Weakness Enumeration

CWE-200

Related Identifiers

CVE-2026-47263

Affected Products

Discourse

References · 2

• https://nvd.nist.gov/vuln/detail/CVE-2026-47263 · Security Note
• https://github.com/discourse/discourse/security/advisories/GHSA-wvrm-9v64-m96p · Note