It is possible to execute JavaScript in the parsed RSS feed when RSS feed is viewed as a website, e.g. via “View -> Feed article -> Website” or in the standard format of “View -> Feed article -> default format”. This vulnerability affects Thunderbird < 52.5.2.
[
{
"product": "Thunderbird",
"vendor": "Mozilla",
"versions": [
{
"lessThan": "52.5.2",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
}
]
}
]