What’s Vulnerable › Vulnerabilities

CVE-2025-32873

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 14.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-05-08 · updated 2026-06-17
• Weakness: CWE-770

Description

An issue was discovered in Django 4.2 before 4.2.21, 5.1 before 5.1.9, and 5.2 before 5.2.1. The django.utils.html.strip_tags() function is vulnerable to a potential denial-of-service (slow performance) when processing inputs containing large sequences of incomplete HTML tags. The template filter striptags is also vulnerable, because it is built on top of strip_tags().

Affected products

• Django: from 4.2.0 before 4.2.21; from 5.1 before 5.1.9; 5.2 — fixed in 4.2.21, 5.1.9

How to fix

Upgrade to a fixed version: Django 4.2.21, 5.1.9. Check the vendor advisory for mitigations.

References

• https://docs.djangoproject.com/en/dev/releases/security/
• https://groups.google.com/g/django-announce
• https://www.djangoproject.com/weblog/2025/may/07/security-releases/
• http://www.openwall.com/lists/oss-security/2025/05/07/1

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