This indicates an attack attempt to exploit a Policy Bypass Vulnerability in GNU wget.
The vulnerability is due to an error in the vulnerable application when handling a maliciously crafted response. A remote attacker can exploit this to by enticing an user to send a request to the vulnerable application, causing policy bypass and the disclosure of HTTP state information via a crafted response.
GNU wget prior to 1.19.5
Security Bypass: Remote attackers can bypass security checks of vulnerable systems.
Apply the most recent upgrade or patch from the vendor: