Inconsistencies were found in the way the java.net.URI and com.sun.jndi.toolkit.url.URI classes in the JNDI component of OpenJDK parsed URI strings. These inconsistencies could be used to make a Java application accept invalid or malformed URI strings.

Parsing of URL strings in built-in JNDI providers were made more strict as part of the fix. For more information, see the following release notes for Oracle JDK 7u341, 8u331, 11.0.15, 17.0.3, 18.0.1:

https://www.oracle.com/java/technologies/javase/7-support-relnotes.html#JDK-8278972 https://www.oracle.com/java/technologies/javase/8u331-relnotes.html#JDK-8278972 https://www.oracle.com/java/technologies/javase/11-0-15-relnotes.html#JDK-8278972 https://www.oracle.com/java/technologies/javase/17-0-3-relnotes.html#JDK-8278972 https://www.oracle.com/java/technologies/javase/18-0-1-relnotes.html#JDK-8278972