View at Official ubuntu advisory, NVD, CVE.org · CVE detail
Freshness: upstream tracker timestamp is available; use API updated time as primary recency signal.
CVE-2018-10101 medium priority: Ubuntu including 1 source packages (wordpress), 8 status rows across 8 suites (artful, bionic, cosmic, disco, eoan, trusty, upstream, xenial): not-affected 5, DNE 1, ignored 1, released 1.
Before WordPress 4.9.5, the URL validator assumed URLs with the hostname localhost were on the same host as the WordPress server.