JFrog Artifactory Pro 6.5.9 Signature Validation

JFrog Artifactory Pro 6.5.9 Signature Validation
The SAML SSO addon in JFrog Artifactory version 6.5.9 does not properly validate the XML signature in the SAMLResponse field send to the URL /webapp/saml/loginResponse. An attacker can use this flaw to login as any user if they already can login as some user.