CVE-2021-23433

CVE-2021-23433 is a critical Prototype Pollution vulnerability affecting versions of the algoliasearch-helper package prior to 3.6.2. This flaw, residing in the merge function within src/SearchParameters/index.jsSearchParameters._parseNumbers, allows an attacker to inject arbitrary properties into an object's prototype. With a CVSS score of 9.8 (CRITICAL), it presents a high risk due to its network-based attack vector, low attack complexity, and potential for complete compromise of confidentiality, integrity, and availability. While there is no evidence of active exploitation, public exploit code, or inclusion in the KEV catalog, the vulnerability has garnered significant community discussion with 10 mentions, indicating awareness among security researchers.