CVE-2026-101914
@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.
- CVSS 3.1
- 6.5
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N - EPSS
- 0.3% chance of exploitation in the next 30 days; higher than 16% of CVEs (scores of 2026-10-25)
- CWEs
- CWE-187, CWE-863
- Published
- Modified
- Record from
- the NVD, synced
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-88h9-xgvx-hvf2 | npm | @grpc/grpc-js-xds | <1.13.1 | 1.13.1 |
| GHSA-88h9-xgvx-hvf2 | npm | @grpc/grpc-js-xds | >=1.14.0 <1.14.1 | 1.14.1 |
References
- 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