Description (CNA)
Discourse is an open source discussion platform. Prior to versions 2026.3.0-latest.1, 2026.2.1 and 2026.1.2, insufficient cleanup in the default Codepen allowed iframes value allows an attacker to trick a user into changing the URL of the main page. This issue has been fixed in versions 2026.3.0-latest.1, 2026.2.1 and 2026.1.2. To workaround this issue, remove Codepen from the list of allowed iframes.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| discourse / discourse | affected < 2026.3.0-latest.1; affected >= 2026.2.0-latest, < 2026.2.1; affected >= 2026.1.0-latest, < 2026.1.2 |
CWE
CWE-80
References
- https://github.com/discourse/discourse/security/advisories/GHSA-h653-cq78-vjj2
- https://github.com/discourse/discourse/commit/c4762a4fac2f61f52f325396b11d3aeb955ea925
ADP enrichment
No English description supplied.
No references supplied.