PEEL Shopping version 9.4.0 allows remote SQL injection. A public user/guest (unauthenticated) can inject a malicious SQL query in order to affect the execution of predefined SQL commands. Upon a successful SQL injection attack, an attacker can read sensitive data from the database and possibly modify database data.
https://github.com/faisalfs10x/CVE-IDs/blob/main/2021/CVE-2021-37593/Proof_of_Concept.md
https://github.com/advisto/peel-shopping/issues/3
http://www.netbytesec.com/advisories/UnauthenticatedBlindSQLInjectionVulnerabilityInPEELShopping/