{"id":"GHSA-88h9-xgvx-hvf2","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.","aliases":["CVE-2026-101914"],"modified":"2026-09-28T20:00:41.196504515Z","published":"2026-09-28T19:43:51Z","database_specific":{"cwe_ids":["CWE-187","CWE-863"],"severity":"MODERATE","github_reviewed":true,"github_reviewed_at":"2026-09-28T19:43:51Z","nvd_published_at":null},"references":[{"type":"WEB","url":"https://github.com/grpc/grpc-node/security/advisories/GHSA-88h9-xgvx-hvf2"},{"type":"WEB","url":"https://github.com/grpc/grpc-node/commit/6cf64b596da03f1942a6b168998f0670217a99c4"},{"type":"WEB","url":"https://github.com/grpc/grpc-node/commit/a6c5b31180cc8cea94d0a5ea215ce31a49e0409f"},{"type":"WEB","url":"https://github.com/grpc/grpc-node/commit/f32f3712e44581d8dfc8359bd8d30096662f4c75"},{"type":"PACKAGE","url":"https://github.com/grpc/grpc-node"},{"type":"WEB","url":"https://github.com/grpc/grpc-node/releases/tag/@grpc/grpc-js-xds/1.13.1"},{"type":"WEB","url":"https://github.com/grpc/grpc-node/releases/tag/@grpc/grpc-js-xds/1.14.1"}],"affected":[{"package":{"name":"@grpc/grpc-js-xds","ecosystem":"npm","purl":"pkg:npm/%40grpc/grpc-js-xds"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.13.1"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/09/GHSA-88h9-xgvx-hvf2/GHSA-88h9-xgvx-hvf2.json"}},{"package":{"name":"@grpc/grpc-js-xds","ecosystem":"npm","purl":"pkg:npm/%40grpc/grpc-js-xds"},"ranges":[{"type":"SEMVER","events":[{"introduced":"1.14.0"},{"fixed":"1.14.1"}]}],"versions":["1.14.0"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/09/GHSA-88h9-xgvx-hvf2/GHSA-88h9-xgvx-hvf2.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N"}]}