Mixmax: Possible Subdomain Takeover

None of the weakness categories really fit this so I apologize for that. The subdomain sales.mixmax.com points to 151.101.16.229, a webflow.io proxy server. Because it 404s, this leads me to believe that a subdomain takeover is possible through the webflow service as whatever this is pointing to ...

com.google.code.struts2webflow:struts2webflow-parent (1.0.4), com.google.code.struts2webflow:struts2webflow-plugin (1.0.4) +24 more potentially affected by CVE-2008-6505 via org.apache.struts:struts2-core (>=2.0.5, <=2.0.11.2)

org.apache.struts:struts2-core MAVEN version =2.0.5, =2.0.5, =2.0.5, =2.0.5, =2.0.5, =2.0.5, =2.0.5, =2.0.5, =2.0.5, =2.0.5, =2.0.11.2 and more Source cves: CVE-2008-6505 Source advisory: MEND:CVE-2008-6505...