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cvelistMozillaCVELIST:CVE-2018-18500
HistoryFeb 05, 2019 - 9:00 p.m.

CVE-2018-18500

2019-02-0521:00:00
mozilla
raw.githubusercontent.com
3

9.1 High

AI Score

Confidence

High

0.42 Medium

EPSS

Percentile

97.3%

A use-after-free vulnerability can occur while parsing an HTML5 stream in concert with custom HTML elements. This results in the stream parser object being freed while still in use, leading to a potentially exploitable crash. This vulnerability affects Thunderbird < 60.5, Firefox ESR < 60.5, and Firefox < 65.