GHSA-fcrp-7gc2-93g7

Suggest an improvement
Source
https://github.com/advisories/GHSA-fcrp-7gc2-93g7
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/07/GHSA-fcrp-7gc2-93g7/GHSA-fcrp-7gc2-93g7.json
JSON Data
https://api.test.osv.dev/v1/vulns/GHSA-fcrp-7gc2-93g7
Aliases
Downstream
CGA (72)
MINI (6)
Published
2026-07-16T19:14:50Z
Modified
2026-09-21T09:40:33Z
Severity
  • 6.4 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:L CVSS Calculator
Summary
Envoy Gateway custom backendRef cross-namespace ReferenceGrant bypass
Details

Impact

Envoy Gateway accepts extension-managed custom backendRefs from an HTTPRoute to a backend resource in another namespace without requiring a matching Gateway API ReferenceGrant in the target namespace. This breaks the Gateway API cross-namespace consent model: the namespace that owns the referenced backend resource does not need to opt in with a ReferenceGrant before another namespace’s HTTPRoute can use that resource.

Patches

1.7.4 1.8.1

Database specific 
{
    "cwe_ids": [
        "CWE-862"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-07-16T19:14:50Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
}
References

Affected packages

Go / github.com/envoyproxy/gateway

Package

Name
github.com/envoyproxy/gateway
View open source insights on deps.dev
Purl
pkg:golang/github.com/envoyproxy/gateway

Affected ranges

Type
SEMVER
Events
Introduced
1.8.0-rc.0
Fixed
1.8.1

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/07/GHSA-fcrp-7gc2-93g7/GHSA-fcrp-7gc2-93g7.json"

Go / github.com/envoyproxy/gateway

Package

Name
github.com/envoyproxy/gateway
View open source insights on deps.dev
Purl
pkg:golang/github.com/envoyproxy/gateway

Affected ranges

Type
SEMVER
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.7.4

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/07/GHSA-fcrp-7gc2-93g7/GHSA-fcrp-7gc2-93g7.json"