CVE-2025-22602

Published: Feb 4, 2025Modified: Sep 26, 2025

6.1

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Exploitability: 2.8 / Impact: 2.7

Source: NVD

Description

Discourse is an open source platform for community discussion. In affected versions an attacker can execute arbitrary JavaScript on users' browsers by posting a malicious video placeholder html element. This issue only affects sites with CSP disabled. This problem has been patched in the latest version of Discourse. Users are advised to upgrade. Users unable to upgrade should enable CSP.

Affected (5)

Products: Discourse: Discourse

Discourse

1 product

Discourse

Configuration A

5 vulnerable

Vulnerable Software	Affected Versions
Discourse Discourse	Before 3.4.0
Discourse Discourse	Before 3.3.4
Discourse Discourse	Version 3.4.0 beta1
Discourse Discourse	Version 3.4.0 beta2
Discourse Discourse	Version 3.4.0 beta3

Related CWEs

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

References (1)

https://github.com/discourse/discourse/security/advisories/GHSA-jcjx-694p-c5m3

Source: security-advisories@github.com

Third Party Advisory

Timeline

No history available yet.