CVE-2026-33514

MEDIUM

Discourse: Information Disclosure in Form Template API Due to Missing Authorization

Title source: cna
STIX 2.1

Description

Discourse is an open-source discussion platform. In versions prior to 2026.1.4, 2026.3.1, 2026.4.1 and 2026.5.0-latest.1, an authenticated user on a Discourse instance with the form templates feature enabled can read the name and structured content of form templates that are intended exclusively for categories they are not authorized to access. Impact is limited to disclosure of site configuration metadata. This issue has been fixed in versions 2026.1.4, 2026.3.1, 2026.4.1 and 2026.5.0-latest.1.

References (2)

Core 2

Scores

CVSS v4 6.0
EPSS 0.0004
EPSS Percentile 11.7%
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/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

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-862
Status published
Products (4)
discourse/discourse < 2026.1.4
discourse/discourse >= 2026.3.0-latest, < 2026.3.1
discourse/discourse >= 2026.4.0-latest, < 2026.4.1
discourse/discourse >= 2026.5.0-latest , < 2026.5.0-latest.1
Published May 19, 2026
Tracked Since May 19, 2026