CVE-2025-50183 OpenList (frontend) allows XSS Attacks in the built-in Markdown Viewer
Stored XSS in OpenList frontend allows attackers to execute arbitrary JavaScript via malicious Python files viewed in the Markdown viewer.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2025-50183?
CVE-2025-50183 is a medium-severity cross-site scripting vulnerability in OpenListTeam OpenList, published on 19 Jun 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
OpenList Frontend is a UI component for OpenList. Prior to version 4.0.0-rc.4, a vulnerability exists in the file preview/browsing feature of the application, where files with a .py extension that contain JavaScript code wrapped in <script> tags may be interpreted and executed as HTML in certain modes. This leads to a stored XSS vulnerability. This issue has been patched in version 4.0.0-rc.4.
Weakness: CWE-79
Which versions are affected by CVE-2025-50183?
2 open source packages ship an affected version, including @openlist-frontend/openlist-frontend.
| Package | Affected | Fixed in |
|---|---|---|
@openlist-frontend/openlist-frontend npm | All versions | 4.0.0-rc.4 |
@openlist-frontend/openlist-frontend npm | All versions | 4.0.0-rc.4 |
How do I fix CVE-2025-50183?
Upgrade @openlist-frontend/openlist-frontend to 4.0.0-rc.4 or later.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2025-50183 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-50183 exists.
Sources
Also known as GHSA-2hw3-h8qx-hqqp.