In NASA Open MCT (aka openmct) before 3.1.0, prototype pollution can occur via an import action.
https://www.linkedin.com/pulse/prototype-pollution-nasas-open-mct-cve-2023-45282
https://nasa.github.io/openmct/
https://github.com/nasa/openmct/pull/7094/commits/545a1770c523ecc3410dca884c6809d5ff0f9d52