A flaw was found in the Kroxylicious ACL authorizer. Its prefix-matching logic may apply a rule to a principal of a different type, or fail to check a broader matching rule when prefixes overlap. Depending on the ACL configuration, this may allow an authenticated Kafka client to access a resource (such as read a topic) that should be denied.
https://github.com/kroxylicious/kroxylicious/security/advisories/GHSA-qvv3-6w3q-hgqc
https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-113733