CVE-2024-35234

MEDIUM

Discourse < 3.2.3 - XSS

Title source: rule
STIX 2.1

Description

Discourse is an open-source discussion platform. Prior to version 3.2.3 on the `stable` branch and version 3.3.0.beta3 on the `tests-passed` branch, an attacker can execute arbitrary JavaScript on users’ browsers by posting a specific URL containing maliciously crafted meta tags. This issue only affects sites with Content Security Polic (CSP) disabled. The problem has been patched in version 3.2.3 on the `stable` branch and version 3.3.0.beta3 on the `tests-passed` branch. As a workaround, ensure CSP is enabled on the forum.

Scores

CVSS v3 4.2
EPSS 0.0017
EPSS Percentile 38.4%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:L

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-79
Status published
Products (3)
discourse/discourse 3.3.0 beta1 (2 CPE variants)
discourse/discourse < 3.2.3
discourse/discourse < 3.3.0
Published Jul 03, 2024
Tracked Since Feb 18, 2026