CVE-2025-24370

Django-Unicorn Class Pollution Vulnerability, Leading to XSS, DoS and Authentication Bypass

Published Feb 3, 2025 CVSS 4.0 · 9.3 Critical EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2025-0219 Django-Unicorn Class Pollution Vulnerability, Leading to XSS, DoS and Authentication Bypass
Github GHSA Github GHSA GHSA-g9wf-5777-gq43 Django-Unicorn Class Pollution Vulnerability, Leading to XSS, DoS and Authentication Bypass
History
Type Values Removed Values Added
Metrics epss

{'score': 0.00323}

epss

{'score': 0.00328}

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title Django-Unicorn Class Pollution Vulnerability, Leading to XSS, DoS and Authentication Bypass
Weaknesses CWE-915
References
Metrics cvssV4_0

{'score': 9.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

Subscriptions

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Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Feb 4, 2025, 3:35 PM
Reserved
Jan 20, 2025, 3:18 PM
Status
Deferred
Published
Feb 3, 2025, 9:15 PM
Modified
Jun 17, 2026, 8:58 AM