CyberRota Analysis
This is a critical severity vulnerability with a CVSS score of 9.8. It affects Firefox.
CVE
CVE-2018-5116
Severity
CRITICAL
CVSS
9.8
EPSS
1.18%
Firefox
Original NVD Description
WebExtensions with the "ActiveTab" permission are able to access frames hosted within the active tab even if the frames are cross-origin. Malicious extensions can inject frames from arbitrary origins into the loaded page and then interact with them, bypassing same-origin user expectations with this permission. This vulnerability affects Firefox < 58.
Related CVEs
Other vulnerabilities affecting the same vendor(s)