SpringBlade vulnerabilities

An XXE vulnerability in the /designer/loadReport endpoint of SpringBlade v4.8.0 allows authenticated attackers to execute arbitrary code via injecting a crafted payload.

In SpringBlade version 3.7.0 and earlier, a missing permission control framework allows a remote attacker to escalate privileges.

SpringBlade versions from 2.7.3 up to but not including 5.0.0 contain a privilege escalation vulnerability that allows authenticated attackers to create system administrator accounts by sending crafted POST requests to an unprotected internal Feign user-creation endpoint exposed via @RestController without authorization checks. Attackers can exploit the gateway's authentication filter, which only validates JWT parsing without verifying user roles or caller identity, and leverage a hardcoded JWT signing key embedded in publicly available JARs to forge tokens and escalate privileges from a low-privilege user to administrator, enabling cross-tenant data pollution and persistent backdoor access.