CVE-2026-55590: CakePHP Authentication: Open redirect weakness via backslash bypass

June 17, 2026

The getLoginRedirect() method contains a weakness to backslash bypasses allowing redirect targets with attacker controlled hostnames.

References

github.com/advisories/GHSA-hhpq-7wg4-36jm
github.com/cakephp/authentication/security/advisories/GHSA-hhpq-7wg4-36jm
nvd.nist.gov/vuln/detail/CVE-2026-55590

Code Behaviors & Features

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