GHSA-88h9-xgvx-hvf2

Source

https://github.com/advisories/GHSA-88h9-xgvx-hvf2

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/09/GHSA-88h9-xgvx-hvf2/GHSA-88h9-xgvx-hvf2.json

JSON Data

https://api.osv.dev/v1/vulns/GHSA-88h9-xgvx-hvf2

Aliases

CVE-2026-101914

Published

2026-09-28T19:43:51Z

Modified

2026-09-28T20:00:41Z

Severity

6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N CVSS Calculator

Summary

@grpc/grpc-js: The exact path match matcher incorrectly only applies a prefix match for case-insensitive matches

Details

Impact

When 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.

Patches

This vulnerability is fixed in 1.13.1 and 1.14.1.

Workarounds

This problem can be avoided by enabling case-sensitive path matching.

Database specific

{
    "cwe_ids":  [
        "CWE-187",
        "CWE-863"
    ],
    "github_reviewed":  true,
    "github_reviewed_at":  "2026-09-28T19:43:51Z",
    "nvd_published_at":  null,
    "severity":  "MODERATE"
}

References

Affected packages

npm / @grpc/grpc-js-xds

Package

Name: @grpc/grpc-js-xds; View open source insights on deps.dev
Purl: pkg:npm/%40grpc/grpc-js-xds

Affected ranges

Type: SEMVER
Events: Introduced

0 Unknown introduced version / All previous versions are affected

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"

npm / @grpc/grpc-js-xds

Package

Name: @grpc/grpc-js-xds; View open source insights on deps.dev
Purl: pkg:npm/%40grpc/grpc-js-xds

Affected ranges

Type: SEMVER
Events: Introduced

1.14.0

Fixed

1.14.1

Affected versions

1.*

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"