Incorrect Authorization Affecting io.github.lognet:grpc-spring-boot-starter package, versions [0,]
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
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- published31 Aug 2026
- disclosed31 Aug 2026
- creditWayde Shi
Introduced: 31 Aug 2026
NewCVE-2026-82594 (opens in a new tab)How to fix?
There is no fixed version for io.github.lognet:grpc-spring-boot-starter.
Overview
Affected versions of this package are vulnerable to Incorrect Authorization in the processSecuredAnnotation() method of GrpcServiceAuthorizationConfigurer, which uses MultiValueMap.addAll() to combine class-level and method-level @Secured rules and evaluates the merged set with AffirmativeBased, so the rules are OR-merged instead of letting the stricter method-level rule override. A user holding only the broad class-level role can invoke a method restricted to a stricter role, for example reaching a method marked @Secured("ROLE_ADMIN") under a class marked @Secured("ROLE_USER") with only ROLE_USER, because either rule granting access is sufficient. This requires a service that stacks a broader class-level @Secured annotation with a stricter method-level one, and the caller must already hold the broader role.