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Δ / VULNERABILITY RECORD

CVE-2026-84429.

Source-reported disclosure and enrichment record.

SEVERITY / CVSSMEDIUM / 6.9CVSS 4.0 · 6a34fbeb-21d4-45e7-8e0a-62b95bc12c92
EXPLOITATION STATUSNot listed in the cached KEV catalogThis does not establish absence of exploitation.
RECORD STATUSDeferredModified Oct 06, 2026

Disclosure summary

An issue was discovered in Django 6.1 before 6.1.2, 6.0 before 6.0.9, and 5.2 before 5.2.18. `django.utils.http.parse_header_parameters()` was subject to a potential denial-of-service attack due to quadratic time complexity when parsing a value with many separators inside a quoted parameter. An unauthenticated request could reach this parsing through headers such as `Accept` or `Content-Type`, for instance via the content negotiation performed by `HttpRequest.accepts()`. The per-call length limit does not bound the combined size of repeated headers. Earlier, unsupported Django series (such as 5.1.x, 5.0.x, and 4.2.x) were not evaluated and may also be affected. Django would like to thank Jisung Chae for reporting this issue.

Source-reported weakness categories

CWE-407

Source-specific records & product guidance

Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.

NIST National Vulnerability Database · NVD-CVE-2026-84429

Open original source · Updated Oct 06, 2026

Only CPE matches marked vulnerable=true are indexed. AND/OR platform conditions must be checked in the original NVD record.

Original records & references

PUBLISHED 2026-10-06T10:17:46-04:00
MODIFIED 2026-10-06T11:17:19-04:00
INGESTED 2026-10-06T11:45:53-04:00