CVE-2026-90771

joi (the Hapi.js validation library) before versions 17.13.8 and 18.2.9 is affected by a prototype pollution vulnerability in the messages compilation function . The root cause is that the function accepts __proto__ as a valid error code, allowing an attacker to supply __proto__ keys in custom er...

EUVD-2026-76992

joi before versions 17.13.8 and 18.2.9 contains a prototype pollution vulnerability in the messages compilation function that accepts proto as an error code. Attackers can supply proto keys in custom messages to replace the returned object's prototype, breaking downstream code relying on...