CVE-2025-24370 Django-Unicorn Class Pollution Vulnerability, Leading to XSS, DoS and Authentication Bypass
Attackers can exploit class pollution in Django-Unicorn to achieve code execution, bypass authentication, or cause denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-24370?
CVE-2025-24370 is a critical code injection vulnerability in adamghill django-unicorn, published on 3 Feb 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Django-Unicorn adds modern reactive component functionality to Django templates. Affected versions of Django-Unicorn are vulnerable to python class pollution vulnerability. The vulnerability arises from the core functionality `set_property_value`, which can be remotely triggered by users by crafting appropriate component requests and feeding in values of second and third parameter to the vulnerable function, leading to arbitrary changes to the python runtime status. With this finding at least five ways of vulnerability exploitation have been observed, stably resulting in Cross-Site Scripting (XSS), Denial of Service (DoS), and Authentication Bypass attacks in almost every Django-Unicorn-based application. This issue has been addressed in version 0.62.0 and all users are advised to upgrade. There are no known workarounds for this vulnerability.
Weakness: CWE-915
Which versions are affected by CVE-2025-24370?
3 open source packages ship an affected version, including django-unicorn.
| Package | Affected | Fixed in |
|---|---|---|
django-unicorn PyPI | All versions | 0.62.0 |
django-unicorn PyPI | All versions | 0.62.0 |
django-unicorn PyPI | All versions | 0.62.0 |
How do I fix CVE-2025-24370?
Upgrade django-unicorn to 0.62.0 or later.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2025-24370 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-24370 exists.
Sources
Also known as GHSA-g9wf-5777-gq43, PYSEC-2026-329.