An XML external entities (XXE) vulnerability in Jenkins Token Macro Plugin 2.7 and earlier allowed attackers able to control a the content of the input file for the "XML" macro to have Jenkins resolve external entities, resulting in the extraction of secrets from the Jenkins agent, server-side request forgery, or denial-of-service attacks.

An information exposure and denial of service vulnerability exists in Jenkins Token Macro Plugin 2.5 and earlier in src/main/java/org/jenkinsci/plugins/tokenmacro/Parser.java, src/main/java/org/jenkinsci/plugins/tokenmacro/TokenMacro.java, src/main/java/org/jenkinsci/plugins/tokenmacro/impl/AbstractChangesSinceMacro.java, src/main/java/org/jenkinsci/plugins/tokenmacro/impl/ChangesSinceLastBuildMacro.java, src/main/java/org/jenkinsci/plugins/tokenmacro/impl/ProjectUrlMacro.java that allows attackers with the ability to control token macro input (such as SCM changelogs) to define recursive input that results in unexpected macro evaluation.