{"id":"CVE-2026-101914","aliases":["GHSA-88h9-xgvx-hvf2"],"url":"https://o3.security/vulnerability/CVE-2026-101914","summary":"@grpc/grpc-js: The exact path match matcher incorrectly only applies a prefix match for case-insensitive matches","details":"### Impact\nWhen 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.\n\n### Patches\n\nThis vulnerability is fixed in 1.13.1 and 1.14.1.\n\n### Workarounds\nThis problem can be avoided by enabling case-sensitive path matching.","published":"2026-09-28T19:36:55.746Z","modified":"2026-10-21T02:54:27.606127020Z","cvss":{"score":6.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"npm","name":"@grpc/grpc-js-xds","fixedVersion":"1.13.1"},{"ecosystem":"npm","name":"@grpc/grpc-js-xds","fixedVersion":"1.14.1"}],"fix":{"url":"https://github.com/grpc/grpc-node/commit/6cf64b596da03f1942a6b168998f0670217a99c4","label":"grpc/grpc-node@6cf64b5"},"references":[{"type":"WEB","url":"https://github.com/grpc/grpc-node/releases/tag/@grpc/grpc-js-xds%401.13.1"},{"type":"WEB","url":"https://github.com/grpc/grpc-node/releases/tag/@grpc/grpc-js-xds%401.14.1"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/101xxx/CVE-2026-101914.json"},{"type":"ADVISORY","url":"https://github.com/grpc/grpc-node/security/advisories/GHSA-88h9-xgvx-hvf2"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-101914"},{"type":"FIX","url":"https://github.com/grpc/grpc-node/commit/6cf64b596da03f1942a6b168998f0670217a99c4"},{"type":"FIX","url":"https://github.com/grpc/grpc-node/commit/a6c5b31180cc8cea94d0a5ea215ce31a49e0409f"},{"type":"FIX","url":"https://github.com/grpc/grpc-node/commit/f32f3712e44581d8dfc8359bd8d30096662f4c75"},{"type":"PACKAGE","url":"https://github.com/grpc/grpc-node"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-21T02:54:27.606127020Z"}}