medium6.5
CVE-2026-101914
@grpc/grpc-js: The exact path match matcher incorrectly only applies a prefix match for case-insensitive matches
Impact
@grpc/grpc-js implements the core functionality of gRPC purely in JavaScript, without a C++ addon. Prior to 1.13.1 and 1.14.1, the exact path (method name) matcher used by RBAC performs a prefix comparison instead of an equality comparison when case-insensitive matching is enabled. If one service method name prefixes another and the methods have different access rules, a request for the longer method can match the shorter method's rule and cause incorrect authorization. This issue is fixed in versions 1.13.1 and 1.14.1.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | @grpc/grpc-js-xds | < 1.13.1 | 1.13.1 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-88h9-xgvx-hvf2
- https://github.com/grpc/grpc-node/security/advisories/GHSA-88h9-xgvx-hvf2
- https://github.com/grpc/grpc-node/commit/6cf64b596da03f1942a6b168998f0670217a99c4
- https://github.com/grpc/grpc-node/commit/a6c5b31180cc8cea94d0a5ea215ce31a49e0409f
- https://github.com/grpc/grpc-node/commit/f32f3712e44581d8dfc8359bd8d30096662f4c75
- https://github.com/grpc/grpc-node/releases/tag/@grpc/grpc-js-xds%401.13.1
- https://github.com/grpc/grpc-node/releases/tag/@grpc/grpc-js-xds%401.14.1