Vulnerability Details CVE-2026-5766
An issue was discovered in 6.0 before 6.0.5 and 5.2 before 5.2.14.
ASGI requests with a missing or understated `Content-Length` header can bypass the `FILE_UPLOAD_MAX_MEMORY_SIZE` limit, potentially loading large files into memory and causing service degradation.
As a reminder, Django expects a limit to be configured at the web server level rather than solely relying on `FILE_UPLOAD_MAX_MEMORY_SIZE`.
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 Kyle Agronick for reporting this issue.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 17.7%
CVSS Severity
CVSS v3 Score 5.3
References
Products affected by CVE-2026-5766
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cpe:2.3:a:djangoproject:django:5.2
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cpe:2.3:a:djangoproject:django:5.2.1
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cpe:2.3:a:djangoproject:django:5.2.10
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cpe:2.3:a:djangoproject:django:5.2.11
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cpe:2.3:a:djangoproject:django:5.2.12
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cpe:2.3:a:djangoproject:django:5.2.13
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cpe:2.3:a:djangoproject:django:5.2.2
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cpe:2.3:a:djangoproject:django:5.2.3
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cpe:2.3:a:djangoproject:django:5.2.4
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cpe:2.3:a:djangoproject:django:5.2.5
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cpe:2.3:a:djangoproject:django:5.2.6
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cpe:2.3:a:djangoproject:django:5.2.7
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cpe:2.3:a:djangoproject:django:5.2.8
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cpe:2.3:a:djangoproject:django:6.0
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cpe:2.3:a:djangoproject:django:6.0.1
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cpe:2.3:a:djangoproject:django:6.0.2
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cpe:2.3:a:djangoproject:django:6.0.3
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cpe:2.3:a:djangoproject:django:6.0.4