#36743: Max URL length of 2048 is too conservative for redirect targets
-------------------------------------+-------------------------------------
Reporter: Jacob Walls | Owner: Varun
| Kasyap Pentamaraju
Type: Bug | Status: closed
Component: HTTP handling | Version: 4.2
Severity: Release blocker | Resolution: fixed
Keywords: | Triage Stage: Accepted
Has patch: 1 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
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Comment (by Natalia <124304+nessita@…>):
In [changeset:"0ae15bb52e17768839d057bc1ae3d72f2866458d" 0ae15bb]:
{{{#!CommitTicketReference repository=""
revision="0ae15bb52e17768839d057bc1ae3d72f2866458d"
[5.2.x] Fixed #36743 -- Increased URL max length enforced in
HttpResponseRedirectBase.
Refs CVE-2025-64458.
The previous limit of 2048 characters reused the URLValidator constant
and proved too restrictive for legitimate redirects to some third-party
services. This change introduces a separate `MAX_URL_REDIRECT_LENGTH`
constant (defaulting to 16384) and uses it in HttpResponseRedirectBase.
Thanks Jacob Walls for report and review.
Backport of a8cf8c292cfee98fe6cc873ca5221935f1d02271 from main.
}}}
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Ticket URL: <https://code.djangoproject.com/ticket/36743#comment:10>
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