The package printf before 0.6.1 are vulnerable to Regular Expression Denial of Service (ReDoS) via the regex string

/\%(?:\(([\w_.]+)\)|([1-9]\d*)\$)?([0 +\-\]*)(\*|\d+)?(\.)?(\*|\d+)?[hlL]?([\%bscdeEfFgGioOuxX])/g

in lib/printf.js. The vulnerable regular expression has cubic worst-case time complexity.

• https://nvd.nist.gov/vuln/detail/CVE-2021-23354
• https://github.com/adaltas/node-printf/issues/31
• https://github.com/adaltas/node-printf/pull/32
• https://github.com/adaltas/node-printf/commit/a8502e7c9b0b22555696a2d8ef67722086413a68
• https://snyk.io/vuln/SNYK-JS-PRINTF-1072096
• https://github.com/advisories/GHSA-xfhp-gmh8-r8v2