description: A mishandled security check when creating a WebSocket in a WebWorker caused the Content Security Policy connect-src header to be ignored. This could lead to connections to restricted origins from inside WebWorkers. This vulnerability affects Firefox < 109, Thunderbird < 102.7, and Firefox ESR < 102.7.
problem types: Content Security Policy wasn't being correctly applied to WebSockets in WebWorkers
affected:
{
vendor: Mozilla
product: Firefox
versions:
version: unspecified, lessThan: 109, status: affected, versionType: custom
}
{
vendor: Mozilla
product: Thunderbird
versions:
version: unspecified, lessThan: 102.7, status: affected, versionType: custom
}
{
vendor: Mozilla
product: Firefox ESR
versions:
version: unspecified, lessThan: 102.7, status: affected, versionType: custom
}
