Opened 3 years ago

Last modified 3 years ago

#34968 closed Cleanup/optimization

MultiPartParser silent large header fields size failures — at Version 1

Reported by: Standa Opichal Owned by: nobody
Component: HTTP handling Version: 4.2
Severity: Normal Keywords:
Cc: Triage Stage: Ready for checkin
Has patch: yes Needs documentation: no
Needs tests: no Patch needs improvement: no
Easy pickings: no UI/UX: no

Description (last modified by Standa Opichal)

The MultiPartParser silently ignores parts of which the http header fields exceed 1024 bytes.

This is caused by the 1024 value being hardcoded here ​https://github.com/django/django/blob/main/django/http/multipartparser.py#L743

Here is a common http header fields limits across popular web servers (from ​https://stackoverflow.com/a/60623751/2448773):

  • Apache - 8K
  • Nginx - 4K-8K
  • IIS - 8K-16K
  • Tomcat - 8K – 48K
  • Node (<13) - 8K; (>13) - 16K

Also reported at ​https://stackoverflow.com/questions/70572148/django-silently-discarding-uploaded-files-with-long-paths

Change History (1)

comment:1 by Standa Opichal, 3 years ago

Description: modified (diff)
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