When pasting a <style> tag from the clipboard into a rich text editor, the CSS sanitizer incorrectly rewrites a @namespace rule. This could allow for injection into certain types of websites resulting in data exfiltration. This vulnerability affects Firefox ESR < 68.4 and Firefox < 72.
72.0.1+build1-0ubuntu0.16.04.11:68.7.0+build1-0ubuntu0.16.04.272.0.1+build1-0ubuntu0.18.04.138.8.0~repack1-0ubuntu138.8.0~repack1-0ubuntu338.8.0~repack1-0ubuntu452.3.1-0ubuntu352.3.1-7fakesync152.8.1-0ubuntu0.18.04.152.9.1-0ubuntu0.18.04.11:68.4.1+build1-0ubuntu0.18.04.172.0.1+build1-0ubuntu152.9.1-1build152.9.1-1ubuntu31:68.4.1+build1-0ubuntu1Exploitability
AV:NAC:LPR:NUI:RScope
S:CImpact
C:LI:LA:NCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N