5.3 Medium
AI Score
Confidence
Low
0.001 Low
EPSS
Percentile
41.8%
When styling and rendering an oversized <select> element, Firefox did not apply correct clipping which allowed an attacker to paint over the user interface. This vulnerability affects Firefox < 89.
<select>
bugzilla.mozilla.org/show_bug.cgi?id=1700235
security.gentoo.org/glsa/202107-09
www.mozilla.org/security/advisories/mfsa2021-23/