Jenkins Git Parameter Plugin vulnerable to code injection due to inexhaustive parameter check

Jenkins Git Parameter Plugin implements a choice build parameter that lists the configured Git SCM’s branches, tags, pull requests, and revisions.

Git Parameter Plugin 439.vb_0e46ca_14534 and earlier does not validate that the Git parameter value submitted to the build matches one of the offered choices.

This allows attackers with Item/Build permission to inject arbitrary values into Git parameters.

Git Parameter Plugin 444.vca_b_84d3703c2 validates that the Git parameter value submitted to the build matches one of the offered choices.