CVE-2024-23324

Envoy is a high-performance edge/middle/service proxy. External authentication can be bypassed by downstream connections. Downstream clients can force invalid gRPC requests to be sent to ext_authz, circumventing ext_authz checks when failure_mode_allow is set to true. This issue has been addressed in released 1.29.1, 1.28.1, 1.27.3, and 1.26.7. Users are advised to upgrade. There are no known workarounds for this vulnerability.

• CWE-20

• https://github.com/envoyproxy/envoy/commit/29989f6cc8bfd8cd2ffcb7c42711eb02c7a5168aPatch, Vendor Advisory
• https://github.com/envoyproxy/envoy/security/advisories/GHSA-gq3v-vvhj-96j6Vendor Advisory
• https://github.com/envoyproxy/envoy/commit/29989f6cc8bfd8cd2ffcb7c42711eb02c7a5168aPatch, Vendor Advisory
• https://github.com/envoyproxy/envoy/security/advisories/GHSA-gq3v-vvhj-96j6Vendor Advisory

Published

Feb 9, 2024

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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