CVE-2026-101914: @grpc/grpc-js: The exact path match matcher incorrectly only applies a prefix match for case-insensitive matches
When using RBAC to apply authentication rules, the exact path (method name) matcher applies a prefix match instead of an exact match for case-insensitive matches. As a result, if a service has a method with a name that is a prefix of the name of a different method, and they have different access rules, and case-insensitive matching is used, this bug can cause improper authentication.
References
- github.com/advisories/GHSA-88h9-xgvx-hvf2
- github.com/grpc/grpc-node/commit/6cf64b596da03f1942a6b168998f0670217a99c4
- github.com/grpc/grpc-node/commit/a6c5b31180cc8cea94d0a5ea215ce31a49e0409f
- github.com/grpc/grpc-node/commit/f32f3712e44581d8dfc8359bd8d30096662f4c75
- github.com/grpc/grpc-node/releases/tag/@grpc/grpc-js-xds%401.13.1
- github.com/grpc/grpc-node/releases/tag/@grpc/grpc-js-xds%401.14.1
- github.com/grpc/grpc-node/security/advisories/GHSA-88h9-xgvx-hvf2
- nvd.nist.gov/vuln/detail/CVE-2026-101914
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