system
Provide references for <CVE-2021-21421>.
user
Where can I find more information about <CVE-2021-21421>?
assistant
References are available at: https://github.com/creharmony/node-etsy-client/security/advisories/GHSA-xw22-wv29-3299, https://github.com/creharmony/node-etsy-client/commit/b4beb8ef080366c1a87dbf9e163051a446acaa7d.