Description
Netflix Titus uses Java Bean Validation (JSR 380) custom constraint validators. When building custom constraint violation error messages, different types of interpolation are supported, including Java EL expressions. If an attacker can inject arbitrary data in the error message template being passed to ConstraintValidatorContext.buildConstraintViolationWithTemplate() argument, they will be able to run arbitrary Java code.
Remediation
References
https://github.com/Netflix/security-bulletins/blob/master/advisories/nflx-2020-002.md
Related Vulnerabilities
CVE-2015-2156 Vulnerability in maven package io.netty:netty-all
CVE-2020-27664 Vulnerability in npm package strapi
CVE-2022-35924 Vulnerability in npm package next-auth
CVE-2018-14731 Vulnerability in npm package parcel-bundler
CVE-2012-0392 Vulnerability in maven package org.apache.struts:struts2-core