CVE-2025-14550
High
Description
An issue was discovered in 6.0 before 6.0.2, 5.2 before 5.2.11, and 4.2 before 4.2.28. `ASGIRequest` allows a remote attacker to cause a potential denial-of-service via a crafted request with multiple duplicate headers. Earlier, unsupported Django series (such as 5.0.x, 4.1.x, and 3.2.x) were not evaluated and may also be affected. Django would like to thank Jiyong Yang for reporting this issue.
SeverityHigh
CVSS7.5
Exploit probability—
Product
Django
PublishedFeb 3, 2026
First seenFeb 3, 2026
Weakness typeCWE-407CWE-407
How to fix
Update
- djangoproject django4.2.28, 5.2.11, 6.0.2 or later
- django6.0.2, 5.2.11, 4.2.28 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| djangoproject django | 4.2 ≤ v < 4.2.28, 5.2 ≤ v < 5.2.11, 6.0 ≤ v < 6.0.2 | 4.2.28, 5.2.11, 6.0.2 |
| djangoPyPI | 6.0a1 ≤ v < 6.0.2, 5.2a1 ≤ v < 5.2.11, 4.2a1 ≤ v < 4.2.28, 4.2 ≤ v < 4.2.28, 5.2 ≤ v < 5.2.11, 6.0 ≤ v < 6.0.2 | 6.0.2, 5.2.11, 4.2.28 |
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