description: bleach.clean behavior parsing style attributes could result in a regular expression denial of service (ReDoS). Calls to bleach.clean with an allowed tag with an allowed style attribute are vulnerable to ReDoS. For example, bleach.clean(..., attributes={'a': ['style']}).
problem types: regular expression denial-of-service (ReDoS) in BleachSanitizerFilter.sanitize_css gauntlet regular expression
affected:
{
vendor: Mozilla
product: Mozilla Bleach
versions:
version: unspecified, lessThan: 3.1.4, status: affected, versionType: custom
}