CVE-2018-10101
Before WordPress 4.9.5, the URL validator assumed URLs with the hostname localhost were on the same host as the WordPress server.
Published: 2018-04-14 · CVSS: Unscored
Before WordPress 4.9.5, the URL validator assumed URLs with the hostname localhost were on the same host as the WordPress server.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7