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| Package Name | Ecosystem | Vulnerable Versions | First Patched Version |
|---|---|---|---|
| django | pip | < 1.2.7 | 1.2.7 |
| Django | pip | >= 1.3, < 1.3.1 | 1.3.1 |
The vulnerability description and patch information show that the core issue was improper handling of X-Forwarded-Host headers in host determination. The commit diff modifies HttpRequest.get_host() to add a check for settings.USE_X_FORWARDED_HOST before trusting HTTP_X_FORWARDED_HOST. This directly corresponds to CWE-20 (input validation failure) and CWE-349 (trusting extraneous headers). The pre-patch code path unconditionally used HTTP_X_FORWARDED_HOST if present, making this function the clear vulnerable entry point.
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