An issue in the Apache Camel A2A component allows for Server-Side Request Forgery (SSRF). The `WebhookUrlValidator` inconsistently classified push notification webhook hosts. Specifically, hosts provided as IP literals were checked against a prefix list for the IPv6 unique local range fc00::/7, while hosts provided as names were resolved and checked using `InetAddress` predicates. Because these predicates did not cover the fc00::/7 range, a webhook URL resolving to that range could bypass security guards. This allows an attacker to control the `TaskPushNotificationConfig.url` variable to trigger blind outbound HTTPS requests from the Camel process to internal addresses, potentially including Authorization headers. Additionally, the pre-check incorrectly blocked any hostnames starting with fc or fd, such as fcm.googleapis.com, regardless of whether they were IP literals.