Moderate severityNVD Advisory· Published Jun 17, 2026· Updated Jun 17, 2026
CakePHP Authentication: Open redirect weakness via backslash bypass
CVE-2026-55590
Description
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.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
cakephp/authenticationPackagist | < 3.3.6 | 3.3.6 |
cakephp/authenticationPackagist | >= 4.0.0, < 4.1.1 | 4.1.1 |
Affected products
1Patches
Vulnerability mechanics
References
2News mentions
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