CVE-2024-47772

MEDIUM

Discourse < 3.3.2 and < 3.4.0 - Stored Cross-Site Scripting via Chat Message Reply

Title source: llm
STIX 2.1

Description

Discourse is an open source platform for community discussion. An attacker can execute arbitrary JavaScript on users' browsers by sending a maliciously crafted chat message and replying to it. This issue only affects sites with CSP disabled. This problem is patched in the latest version of Discourse. All users are advised to upgrade. Users unable to upgrade should ensure CSP is enabled on the forum. Users who do upgrade should also consider enabling a CSP as well as a proactive measure.

References (2)

Core 2
Core References
Mitigation, Third Party Advisory x_refsource_misc
https://developer.mozilla.org/en-US/docs/Web/HTTP/CSP

Scores

CVSS v3 6.5
EPSS 0.0073
EPSS Percentile 72.8%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-79
Status published
Products (3)
discourse/discourse 3.4.0 beta1
discourse/discourse < 3.3.2
discourse/discourse < 3.4.0
Published Oct 07, 2024
Tracked Since Feb 18, 2026