The package angular after 1.7.0 are vulnerable to Regular Expression Denial of Service (ReDoS) by providing a custom locale rule that makes it possible to assign the parameter in posPre: ' '.repeat() of NUMBER_FORMATS.PATTERNS[1].posPre with a very high value. Note: 1) This package has been deprecated and is no longer maintained. 2) The vulnerable versions are 1.7.0 and higher.