There is 1 open security issue in buster.
1 issue left for the package maintainer to handle:
dom4j before 2.0.3 and 2.1.x before 2.1.3 allows external DTDs and External Entities by default, which might enable XXE attacks. However, there is popular external documentation from OWASP showing how to enable the safe, non-default behavior in any application that uses dom4j.
You can find information about how to handle this issue in the security team's documentation.