Jenkins Valgrind Plugin 0.28 and earlier does not configure its XML parser to prevent XML external entity (XXE) attacks.
https://jenkins.io/security/advisory/2020-09-01/#SECURITY-1829
https://jenkins.io/security/advisory/2020-09-01/#SECURITY-1829
http://www.openwall.com/lists/oss-security/2020/09/01/3
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-2245