Categories

Implementation	pac4j version (latest)	Framework version	JDK requirement (for that version)
spring-webmvc-pac4j	6.x	Spring 6.x - 7.x	JDK 17+
spring-webflux-pac4j	6.x	Spring WebFlux 6.x+	JDK 17+
jee-pac4j	6.x	JEE 8+ / Jakarta EE 9+	JDK 17+
buji-pac4j	6.x	Apache Shiro 3.x	JDK 17+
spring-security-pac4j	6.x	Spring Security 6.x / 7.x	JDK 17+
play-pac4j	6.x	Play Framework 3.0 (2.8 and 2.9 with play-pac4j 12.0.x)	JDK 17+
vertx-pac4j	6.x	Vert.x 5.x	JDK 17+
spark-pac4j	6.x	Spark Java 2.9+	JDK 17+
javalin-pac4j	6.x	Javalin 7.x	JDK 17+
ratpack-pac4j	6.x	Ratpack 1.9+	JDK 17+
undertow-pac4j	6.x	Undertow 2.4	JDK 17+
jax-rs-pac4j	6.x	Jakarta RS 3.x - 4.x	JDK 17+
dropwizard-pac4j	6.x	Dropwizard 5.0+	JDK 17+
http4s-pac4j	6.x	Http4s 0.23+	JDK 17+
Knox	6.x	Apache Knox 3.x	JDK 17+
jooby-pac4j	6.x	Jooby 4.x (3.x on JDK 17+)	JDK 21+
pippo-pac4j	2.x	Pippo 1.x	JDK 8+
CAS	6.x	Apereo CAS 7.x - 8.x	JDK 21+ (JDK 25+ for CAS 8.x)

This table lists the latest version of each implementation. The current pac4j 6.x line requires JDK 17; the older 4.x (JDK 8) and 5.x (JDK 11) lines are no longer maintained, though critical security fixes are backported to them — see the security policy.