CVE-2017-5391
Special "about:" pages used by web content, such as RSS feeds, can load privileged "about:" pages in an iframe. If a content-injection bug were found in one of those pages this …
Published: 2018-06-11 · CVSS: Unscored
Special "about:" pages used by web content, such as RSS feeds, can load privileged "about:" pages in an iframe. If a content-injection bug were found in one of those pages this could allow for potential privilege escalation. This vulnerability affects Firefox < 51.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7