CakePHP Authentication: Open redirect weakness via backslash bypass

When

2026-06-17 18:52 UTC

Where

Global (internet)

Category

cyber_advisory · composer

### Impact The `getLoginRedirect()` method contains a weakness to backslash bypasses allowing redirect targets with attacker controlled hostnames. ### Patches 3.3.6 and 4.1.1 contain a fix for this issue. ### Workarounds If you are unable to upgrade, you should consider adding application validation to the redirect query string parameter to mitigate this vulnerability.

Sources

• GitHub Advisory Database ↗ · first seen 2026-06-17 18:52 UTC

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