faces/context/PartialViewContextImpl.java in Eclipse Mojarra, as used in Mojarra for Eclipse EE4J before 2.3.10 and Mojarra JavaServer Faces before 2.2.20, allows Reflected XSS because a client window field is mishandled.
https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html
https://www.oracle.com/security-alerts/cpuoct2020.html
https://www.oracle.com/security-alerts/cpujul2020.html
https://www.oracle.com/security-alerts/cpujan2022.html
https://www.oracle.com/security-alerts/cpujan2021.html
https://www.oracle.com/security-alerts/cpujan2020.html
https://www.oracle.com/security-alerts/cpuapr2020.html
https://github.com/javaserverfaces/mojarra/compare/2.2.19...2.2.20
https://github.com/javaserverfaces/mojarra/commit/f61935cd39f34329fbf27b1972a506fbdd0ab4d4
https://github.com/javaserverfaces/mojarra/commit/ae1c234d0a6750822ac69d4ae26d90e3571f27fe
https://github.com/eclipse-ee4j/mojarra/pull/4567
https://github.com/eclipse-ee4j/mojarra/issues/4556
https://github.com/eclipse-ee4j/mojarra/files/3039198/advisory.txt
https://github.com/eclipse-ee4j/mojarra/compare/2.3.9-RELEASE...2.3.10-RELEASE
https://github.com/eclipse-ee4j/mojarra/commit/a3fa9573789ed5e867c43ea38374f4dbd5a8f81f
https://github.com/eclipse-ee4j/mojarra/commit/8f70f2bd024f00ecd5b3dcca45df73edda29dcee