CVSS 3.1
4.8 mediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:NCVE-2026-126367
@grpc/grpc-js: safe_regex incorrectly applies partial string matching for patterns with alternation
Medium (4.8) in grpc grpc-node. Fixed in @grpc/grpc-js-xds 1.13.2, 1.14.2.
@grpc/grpc-js implements the core functionality of gRPC purely in JavaScript, without a C++ addon. Before 1.13.2, and from 1.14.0 through 1.14.1, the @grpc/grpc-js-xds SafeRegexValueMatcher and PathSafeRegexValueMatcher add start and end anchors without grouping a supplied top-level alternation. An expression intended to match one of several complete values can therefore match a prefix, substring, or suffix. The affected matchers are used for route selection, xDS credential identity matching, and RBAC URL path, principal name, server name, and header rules. An ALLOW policy using an alternation can consequently accept a method, certificate identity, or header value outside the intended set, while a DENY policy becomes broader rather than permissive. This issue is fixed in versions 1.13.2 and 1.14.2.
Severity
- OWASP Top 10
- A01:2025 Broken Access Control
- Published
- Assigned by
- GitHub_M (CNA)
- NVD analysis
- Not in the NVD yet
- Record from
- the CVE List, synced
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Affected
Versions
From the CNA's record in the CVE List.
| Product | Affected |
|---|---|
| grpc-node | < 1.13.2 |
| grpc-node | >= 1.14.0, < 1.14.2 |
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-r7hq-q2xm-6c5m | npm | @grpc/grpc-js-xds | >=1.14.0 <1.14.2 | 1.14.2 |
| GHSA-r7hq-q2xm-6c5m | npm | @grpc/grpc-js-xds | <1.13.2 | 1.13.2 |
References
- https://github.com/grpc/grpc-node/security/advisories/GHSA-r7hq-q2xm-6c5m
- https://github.com/grpc/grpc-node/commit/3fc3b0ebf7a89d64843a73679951142d33b40cb1
- https://github.com/grpc/grpc-node/commit/57a67e96babcb29b6eabc1833221ccf2fa152d43
- https://github.com/grpc/grpc-node/releases/tag/@grpc/grpc-js-xds@1.13.2
- https://github.com/grpc/grpc-node/releases/tag/@grpc/grpc-js-xds@1.14.2