CVE-2026-84429

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Source

https://cve.org/CVERecord?id=CVE-2026-84429

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-84429.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-84429

Downstream

Published

2026-10-06T13:35:17Z

Modified

2026-10-08T02:52:10Z

Severity

6.9 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N CVSS Calculator

Summary

Potential denial-of-service vulnerability in HTTP header parsing

Details

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.

Database specific

{
    "cna_assigner": "DSF",
    "cwe_ids": [
        "CWE-407"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/84xxx/CVE-2026-84429.json",
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "introduced": "6.1"
                },
                {
                    "fixed": "6.1.2"
                },
                {
                    "introduced": "6.0"
                },
                {
                    "fixed": "6.0.9"
                },
                {
                    "introduced": "5.2"
                },
                {
                    "fixed": "5.2.18"
                }
            ],
            "source": "AFFECTED_FIELD"
        },
        {
            "extracted_events": [
                {
                    "introduced": "6.1"
                },
                {
                    "fixed": "6.1.2"
                },
                {
                    "introduced": "6.0"
                },
                {
                    "fixed": "6.0.9"
                },
                {
                    "introduced": "5.2"
                },
                {
                    "fixed": "5.2.18"
                }
            ],
            "source": "DESCRIPTION"
        }
    ]
}

References

Affected packages

Git / github.com/django/django

Affected ranges

Type

GIT

Repo

https://github.com/django/django

Events

Introduced

Fixed

3d8f121695c21234aff3071de0d38b6bd38c3f52

Fixed

6ecd66e09a383be004a78a3a738ea9727ff07b0e

Fixed

7ff7fcc0508864a4bc39693128ace38b1e95a890

Fixed

de56deeabd4c48dfb5193f0001469d80102fb367

Database specific

Show details

{
    "source": "REFERENCES"
}

Affected versions

1.*

1.0

1.1

1.2

1.2.1

1.3

1.4

1.7a2

5.*

5.2

5.2.1

5.2.10

5.2.11

5.2.12

5.2.13

5.2.14

5.2.15

5.2.16

5.2.17

5.2.2

5.2.3

5.2.4

5.2.5

5.2.6

5.2.7

5.2.8

5.2.9

5.2a1

5.2b1

5.2rc1

6.*

6.0

6.0.1

6.0.2

6.0.3

6.0.4

6.0.5

6.0.6

6.0.7

6.0.8

6.0a1

6.0b1

6.0rc1

6.1

6.1.1

6.1a1

6.1b1

6.1rc1

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-84429.json"