CVE ID:	CVE-2021-43138
Description:	In Async before 2.6.4 and 3.x before 3.2.2, a malicious user can obtain privileges via the mapValues() method, aka lib/internal/iterator.js createObjectIterator prototype pollution.
Test IDs:	None available
Cross References:	Common Vulnerability Exposure (CVE) ID: CVE-2021-43138 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UM6XJ73Q3NAM5KSGCOKJ2ZIA6GUWUJLK/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MTEUUTNIEBHGKUKKLNUZSV7IEP6IP3Q3/ https://github.com/caolan/async/blob/master/lib/internal/iterator.js https://github.com/caolan/async/blob/master/lib/mapValuesLimit.js https://github.com/caolan/async/blob/v2.6.4/CHANGELOG.md#v264 https://github.com/caolan/async/commit/e1ecdbf79264f9ab488c7799f4c76996d5dca66d https://github.com/caolan/async/compare/v2.6.3...v2.6.4 https://github.com/caolan/async/pull/1828 https://jsfiddle.net/oz5twjd9/