Remove duplicate query parameters on HTTPS redirect #6460
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HTTPS redirection rebuilds the full URL using req.originalUrl, which includes query parameters (see https://expressjs.com/en/api.html#req.originalUrl). Prior to this patch, appending the stringified query params to req.originalUrl resulted in duplicate parameters, e.g. wiki.js/callback?session=123&code=abc?session=123&code=abc which caused errors when being redirected from an insecure (http://) callback URL to a secure version when using OIDC (e.g. with keycloak). This issue is probably rare, but in cases where HTTPS redirection is enabled and a user tries to hit an insecure URL with query parameters, it could cause problems.
NGPixel
approved these changes
Jun 4, 2023
jonnysp19
approved these changes
Jun 11, 2023
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HTTPS redirection rebuilds the full URL using
req.originalUrl, which includes query parameters (see theexpress docs). Prior to this patch, appending the stringified query params to
req.originalUrlresulted in duplicate parameters, e.g.wiki.js/callback?session=123&code=abc?session=123&code=abcwhich caused errors when being redirected from an insecure (http://) callback URL to a secure version when using Keycloak auth.
This issue is probably rare, but in cases where HTTPS redirection is enabled and a user tries to hit an insecure URL with query parameters, it could cause problems.