PT-2026-26541 · Discourse · Discourse

Published 2026-03-20 · Updated 2026-03-20 · CVE-2026-30891

NVD

CVSS v4.0

5.3

Medium

AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Discourse is an open-source discussion platform. Prior to versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2, a user could access another user's private activity due to insufficient authorization checks in the user actions endpoint. Versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 contain a patch.

Fix

Information Disclosure

Weakness Enumeration

CWE-200

Related Identifiers

CVE-2026-30891

Affected Products

Discourse

References · 2

• https://nvd.nist.gov/vuln/detail/CVE-2026-30891 · Security Note
• https://github.com/discourse/discourse/security/advisories/GHSA-ww5f-24g5-c33g · Note