Summary
Acunetix 360 identified the target web site is using Squid and detected that it is out of date.
Impact
Since this is an old version of the software, it may be vulnerable to attacks.
Remediation
This finding doesn't indicate a direct security impact.
In the version you are using, you may have disabled the function that caused the vulnerability or the version you are using may contain patches.
You can manually identify which versions are labeled for these vulnerabilities by following the references attached below.