description: A vulnerability where a WebExtension can run content scripts in disallowed contexts following navigation or other events. This allows for potential privilege escalation by the WebExtension on sites where content scripts should not be run. This vulnerability affects Firefox ESR < 60.3 and Firefox < 63.
problem types: WebExtension content scripts can execute in disallowed contexts
affected:
{
product: Firefox ESR
vendor: Mozilla
versions:
lessThan: 60.3, status: affected, version: unspecified, versionType: custom
}
{
product: Firefox
vendor: Mozilla
versions:
lessThan: 63, status: affected, version: unspecified, versionType: custom
}
