CyberRota Analysis
This is a medium severity vulnerability with a CVSS score of 4.3. It affects Firefox.
CVE
CVE-2021-43531
Severity
MEDIUM
CVSS
4.3
EPSS
0.33%
Firefox
Original NVD Description
When a user loaded a Web Extensions context menu, the Web Extension could access the post-redirect URL of the element clicked. If the Web Extension lacked the WebRequest permission for the hosts involved in the redirect, this would be a same-origin-violation leaking data the Web Extension should have access to. This was fixed to provide the pre-redirect URL. This is related to CVE-2021-43532 but in the context of Web Extensions. This vulnerability affects Firefox < 94.
Related CVEs
Other vulnerabilities affecting the same vendor(s)