CVE-2021-44528: URL Redirection to Untrusted Site ('Open Redirect')

January 10, 2022 (updated February 8, 2024)

A open redirect vulnerability exists in Action Pack that could allow an attacker to craft a X-Forwarded-Host headers in combination with certain allowed host formats can cause the Host Authorization middleware in Action Pack to redirect users to a malicious website.

References

github.com/rails/rails/commit/0fccfb9a3097a9c4260c791f1a40b128517e7815
nvd.nist.gov/vuln/detail/CVE-2021-44528

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