Bypassing CloudFront WAF with URL‑Encoded /actuator Path

CloudFront WAF blocks the "/actuator" endpoint, but by URL‑encoding each character as "%61%63%74%75%61%74%6f%72" you can evade the rule and directly access the Spring Boot actuator interface.

Black & White Path
Black & White Path
Black & White Path
Bypassing CloudFront WAF with URL‑Encoded /actuator Path

CloudFront WAF applies a 403 rule to the /actuator path, preventing direct access to Spring Boot's actuator endpoints. The article demonstrates that using the URL‑encoded representation /%61%63%74%75%61%74%6f%72 —which encodes each character of "/actuator" in hexadecimal—bypasses the WAF rule, allowing unrestricted access to the actuator interface.

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Spring BootWAFURL encodingActuatorCloudFrontsecurity bypass
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