It is suspected that this package is vulnerable to a security vulnerability in gnulib. As such we ask maintainers with packages suspected to be vulnerable to verify if the package is (or have been) affected. Please see the information contained in the tracker bug 600518. "If an application using parse_datetime(), such as touch or date, accepted untrusted input, it could cause the application to crash or, potentially, execute arbitrary code."
i don't know the specific version this fix started in, but 4.4.x didn't import this module, and 4.5.14+ includes the fix (Apr 2014), and 4.6.0 has been stable for a while now.