CVE-2026-101914@grpc/grpc-js: The exact path match matcher incorrectly only applies a prefix match for case-insensitive matches
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@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
- 6.5 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N
- Weakness (CWE)
- CWE-187, CWE-863
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- GitHub_M
- NVD analysis
- Deferred
- Record last updated
- Sep 29, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
grpc grpc-node grpc:node (from the name) | before 1.13.1; from 1.14.0, < 1.14.1 | CNA record |
References
- https://github.com/grpc/grpc-node/security/advisories/GHSA-88h9-xgvx-hvf2x-refsource-confirm
- https://github.com/grpc/grpc-node/commit/6cf64b596da03f1942a6b168998f0670217a99c4x-refsource-misc
- https://github.com/grpc/grpc-node/commit/a6c5b31180cc8cea94d0a5ea215ce31a49e0409fx-refsource-misc
- https://github.com/grpc/grpc-node/commit/f32f3712e44581d8dfc8359bd8d30096662f4c75x-refsource-misc
- https://github.com/grpc/grpc-node/releases/tag/@grpc/grpc-js-xds%401.13.1x-refsource-misc
- https://github.com/grpc/grpc-node/releases/tag/@grpc/grpc-js-xds%401.14.1x-refsource-misc
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.