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.
History

Wed, 04 Feb 2026 00:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-167
References
Metrics threat_severity

None

threat_severity

Moderate


Tue, 03 Feb 2026 17:15:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 03 Feb 2026 15:00:00 +0000

Type Values Removed Values Added
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.
Title Potential denial-of-service vulnerability via repeated headers when using ASGI
Weaknesses CWE-407
References

cve-icon MITRE

Status: PUBLISHED

Assigner: DSF

Published: 2026-02-03T14:38:15.875Z

Updated: 2026-02-03T16:27:38.976Z

Reserved: 2025-12-11T20:08:21.400Z

Link: CVE-2025-14550

cve-icon Vulnrichment

Updated: 2026-02-03T16:27:35.553Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-02-03T15:16:11.750

Modified: 2026-02-03T17:15:57.603

Link: CVE-2025-14550

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-02-03T14:38:15Z

Links: CVE-2025-14550 - Bugzilla