{"id":"CVE-2026-101914","sourceIdentifier":"security-advisories@github.com","published":"2026-09-28T20:17:09.453","lastModified":"2026-09-30T19:57:08.043","vulnStatus":"Deferred","cveTags":[],"descriptions":[{"lang":"en","value":"@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":[{"source":"security-advisories@github.com","affectedData":[{"vendor":"grpc","product":"grpc-node","versions":[{"version":"< 1.13.1","status":"affected"},{"version":">= 1.14.0, < 1.14.1","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N","baseScore":6.5,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"HIGH","availabilityImpact":"NONE"},"exploitabilityScore":2.2,"impactScore":4.2}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-09-29T19:21:06.531070Z","id":"CVE-2026-101914","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-187"},{"lang":"en","value":"CWE-863"}]}],"references":[{"url":"https://github.com/grpc/grpc-node/commit/6cf64b596da03f1942a6b168998f0670217a99c4","source":"security-advisories@github.com"},{"url":"https://github.com/grpc/grpc-node/commit/a6c5b31180cc8cea94d0a5ea215ce31a49e0409f","source":"security-advisories@github.com"},{"url":"https://github.com/grpc/grpc-node/commit/f32f3712e44581d8dfc8359bd8d30096662f4c75","source":"security-advisories@github.com"},{"url":"https://github.com/grpc/grpc-node/releases/tag/@grpc/grpc-js-xds%401.13.1","source":"security-advisories@github.com"},{"url":"https://github.com/grpc/grpc-node/releases/tag/@grpc/grpc-js-xds%401.14.1","source":"security-advisories@github.com"},{"url":"https://github.com/grpc/grpc-node/security/advisories/GHSA-88h9-xgvx-hvf2","source":"security-advisories@github.com"}]}