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The commit diff shows the framework added security wrappers around express.Response.redirect through the fixOpenRedirect function. The patch introduces allowedRedirectHosts validation and replaces the native redirect implementation. This indicates the original Express.redirect method (called via response.redirect()) was vulnerable to open redirects when handling URLs containing '://' without proper host validation. The vulnerability manifests when using the framework's unpatched redirect functionality with untrusted URL parameters.
| Package Name | Ecosystem | Vulnerable Versions | First Patched Version |
|---|---|---|---|
| oils | npm | < 8.0.0 | 8.0.0 |
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