CVE-2026-114138

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Source
https://cve.org/CVERecord?id=CVE-2026-114138
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-114138.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-114138
Aliases
Downstream
CGA (10)
DEBIAN (1)
ECHO (1)
Published
2026-10-21T20:09:06Z
Modified
2026-10-22T10:46:20Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
Django REST framework: Accept header with many large quoted parameters burns ~19s of CPU per request in content negotiation
Details

Django REST framework is a toolkit for building Web APIs. Prior to 3.18.2, DefaultContentNegotiation.get_accept_list in rest_framework/negotiation.py accepts an unbounded number and aggregate size of Accept tokens, while select_renderer in that file repeatedly invokes _MediaType parsing from rest_framework/utils/mediatypes.py for each attacker-controlled token, every renderer, and forced 406 renegotiation. A remote unauthenticated client can send many distinct media types containing large quoted parameter values with numerous semicolons, causing Django's parameter parser and DRF's repeated parsing structure to consume disproportionate CPU. Requests to any reachable endpoint can pin synchronous workers for prolonged periods, and concurrent requests can make the service unavailable until the requests stop. This issue is fixed in version 3.18.2.

Database specific 
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-400",
        "CWE-407"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/114xxx/CVE-2026-114138.json"
}
References

Affected packages

Git / github.com/encode/django-rest-framework

Affected ranges

Type
GIT
Repo
https://github.com/encode/django-rest-framework
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
69694a17d0b6ac14b4ea4d77916b73c68dc5a3e8
Fixed
148ab6523922d5a0c110f76615935e5220b63029
Database specific
Show details 
{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "0"
                },
                {
                    "fixed":  "3.18.2"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StringRangeExpression"
        },
        {
            "range":  [
                {
                    "fixed":  "148ab6523922d5a0c110f76615935e5220b63029"
                }
            ],
            "source":  "REFERENCES_COMMIT"
        },
        {
            "original_tag":  "3.18.2",
            "range":  [
                {
                    "fixed":  "69694a17d0b6ac14b4ea4d77916b73c68dc5a3e8"
                }
            ],
            "source":  "REFERENCES_TAG"
        }
    ]
}

Affected versions

0.*
0.1
0.2.4
0.3.1
0.3.2
0.3.3
0.4.0
2.*
2.0.0
2.0.1
2.0.2
2.1.0
2.1.1
2.1.10
2.1.11
2.1.12
2.1.13
2.1.14
2.1.15
2.1.16
2.1.17
2.1.2
2.1.3
2.1.4
2.1.5
2.1.6
2.1.7
2.1.8
2.1.9
2.2.0
2.2.1
2.2.2
2.2.3
2.2.4
2.2.6
2.2.7
2.3.0
2.3.1
2.3.10
2.3.11
2.3.12
2.3.13
2.3.14
2.3.2
2.3.3
2.3.4
2.3.5
2.3.6
2.3.7
2.3.8
2.3.9
2.4.0
2.4.1
2.4.2
2.4.3
2.4.4
3.*
3.0.0
3.0.1
3.0.2
3.0.3
3.0.4
3.0.5
3.1.0
3.1.1
3.1.2
3.1.3
3.10.0
3.10.1
3.10.2
3.10.3
3.11.0
3.12.0
3.12.1
3.12.3
3.12.4
3.13.0
3.13.1
3.14.0
3.15.0
3.15.1
3.15.2
3.16.0
3.16.1
3.17.0
3.17.1
3.18.0
3.18.1
3.2.0
3.2.1
3.2.2
3.2.3
3.2.4
3.3.1
3.3.2
3.4.0
3.4.1
3.4.2
3.4.3
3.4.4
3.4.5
3.4.6
3.4.7
3.5.0
3.5.1
3.5.2
3.5.3
3.5.4
3.6.0
3.6.1
3.6.2
3.6.3
3.6.4
3.7.0
3.7.1
3.7.2
3.7.3
3.7.4
3.7.5
3.7.6
3.7.7
3.8.0
3.8.1
3.8.2
3.9.1
3.9.2
3.9.3

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-114138.json"