Description
HedgeDoc is an open source, real-time, collaborative, markdown notes application. Prior to 1.10.3, a malicious SVG file uploaded to HedgeDoc results in the possibility of XSS when opened in a new tab instead of the editor itself. The XSS is possible by exploiting the JSONP capabilities of GitHub Gist embeddings. Only instances with the local filesystem upload backend or special configurations, where the uploads are served from the same domain as HedgeDoc, are vulnerable. This vulnerability is fixed in 1.10.3. When upgrading to HedgeDoc 1.10.3 is not possible, instance owners could add the following headers for all routes under /uploads as a first-countermeasure: Content-Disposition: attachment and Content-Security-Policy: default-src 'none'. Additionally, the external URLs in the script-src attribute of the Content-Security-Policy header should be removed.
INFO
Published Date :
2025-04-10T13:11:48.634Z
Last Modified :
2025-04-10T13:34:59.611Z
Source :
GitHub_M
AFFECTED PRODUCTS
The following products are affected by CVE-2025-32391 vulnerability.
| Vendors | Products |
|---|---|
| Hedgedoc |
|
REFERENCES
Here, you will find a curated list of external links that provide in-depth information to CVE-2025-32391.
