### Description:A regular expression denial of service (ReDoS) vulnerability has been discovered in `ua-parser-js`.### Impact:This vulnerability bypass the library's `MAX_LENGTH` input limit prevention. By crafting a very-very-long user-agent string with specific pattern, an attacker can turn the script to get stuck processing for a very long time which results in a denial of service (DoS) condition.### Affected Versions:All versions of the library prior to version `0.7.33` / `1.0.33`.### Patches:A patch has been released to remove the vulnerable regular expression, update to version `0.7.33` / `1.0.33` or later.### References:[Regular expression Denial of Service - ReDoS](https://owasp.org/www-community/attacks/Regular_expression_Denial_of_Service_-_ReDoS)### Credits:Thanks to @Snyk who first reported the issue.