Partial String Comparison Affecting @grpc/grpc-js-xds package, versions <1.13.1>=1.14.0 <1.14.1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-JS-GRPCGRPCJSXDS-20251002
- published29 Sept 2026
- disclosed28 Sept 2026
- creditSherry Zhou
Introduced: 28 Sep 2026
NewCVE-2026-101914 (opens in a new tab)How to fix?
Upgrade @grpc/grpc-js-xds to version 1.13.1, 1.14.1 or higher.
Overview
@grpc/grpc-js-xds is a Plugin for @grpc/grpc-js. Adds the xds:// URL scheme and associated features.
Affected versions of this package are vulnerable to Partial String Comparison via the PathExactValueMatcher.apply method in matcher.ts, where the case-insensitive exact path match incorrectly uses a prefix match (startsWith) instead of a strict equality check. When RBAC rules are configured to enforce authentication based on exact path (method name) matching, an attacker can bypass those rules by appending arbitrary suffixes to a permitted path, causing requests that should be denied to be incorrectly allowed.