Akaunting version 2.1.12 and earlier suffers from a denial-of-service issue that is triggered by setting a malformed 'locale' variable and sending it in an otherwise normal HTTP POST request. This issue was fixed in version 2.1.13 of the product.
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-36802.json"