CVE-2026-53714 Envoy Gateway - Authentication Bypass

Envoy Gateway < 1.7.4 and < 1.8.1 contains an authentication bypass caused by missing UnaryInterceptor and incomplete JWT validation in xDS gRPC server, letting attackers with network access retrieve sensitive configuration and TLS keys, exploit requires network access to port 18000.

CVSS base score 7.4 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.35% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Authentication Bypass
Impact
Information Disclosure, File System Read
CVSS vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Published
14 September 2026
Updated
15 October 2026
Weakness
CWE-306

Vendor fix

Upgrade to versions 1.7.4 and 1.8.1 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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