The browser could have been confused into transferring a pointer lock state into another tab, which could have lead to clickjacking attacks. This vulnerability affects Firefox < 85.
https://www.mozilla.org/security/advisories/mfsa2021-03/
https://bugzilla.mozilla.org/show_bug.cgi?id=1684837
Source: Mitre, NVD
Published: 2021-02-26
Updated: 2021-03-03
Base Score: 4.3
Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N
Severity: Medium
Base Score: 6.1
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N