description: An attacker could have injected CSS into stylesheets accessible via internal URIs, such as resource:, and in doing so bypass a page's Content Security Policy. This vulnerability affects Firefox ESR < 91.11, Thunderbird < 102, Thunderbird < 91.11, and Firefox < 101.
problem types: CSP bypass enabling stylesheet injection
affected:
{
vendor: Mozilla
product: Firefox ESR
versions:
version: unspecified, lessThan: 91.11, status: affected, versionType: custom
}
{
vendor: Mozilla
product: Thunderbird
versions:
version: unspecified, lessThan: 102, status: affected, versionType: custom
version: unspecified, lessThan: 91.11, status: affected, versionType: custom
}
{
vendor: Mozilla
product: Firefox
versions:
version: unspecified, lessThan: 101, status: affected, versionType: custom
}
