PT-2026-26370 · Discourse · Discourse

Davidtaylorhq · Published 2026-03-19 · Updated 2026-03-19 · CVE-2026-27934

NVD

CVSS v4.0

8.7

High

AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/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. Versions prior to 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 have a lack of visibility checks with a user action API endpoint that results in disclosure of the title and post excerpt to unauthorized users, leading to information disclosure. Versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 contain a patch. No known workarounds are available.

Fix

Weakness Enumeration

CWE-201

Related Identifiers

CVE-2026-27934

Affected Products

Discourse

References · 2

• https://nvd.nist.gov/vuln/detail/CVE-2026-27934 · Security Note
• https://github.com/discourse/discourse/security/advisories/GHSA-824f-66wh-xx3g · Note