The verify_exists functionality in the URLField implementation in Django before 1.2.7 and 1.3.x before 1.3.1 originally tests a URL's validity through a HEAD request, but then uses a GET request for the new target URL in the case of a redirect, which might allow remote attackers to trigger arbitrary GET requests with an unintended source IP address via a crafted Location header.
| Package (Ecosystem) | Introduced | Fixed | Limit |
|---|---|---|---|
| Django(PyPI) | 0 | 1.2.7 | N/A |
| Django(PyPI) | 1.3 | 1.3.1 | N/A |
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