CVE-2024-23324

Name: CVE-2024-23324
Creator: NVD / NIST
Published: 2024-02-09T23:15:09.223+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.60%

Last modified Jun 17, 2026

CVE-2024-23324 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Envoy is a high-performance edge/middle/service proxy. External authentication can be bypassed by downstream connections. EPSS estimates a 0.60% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

EPSS Probability

0.60%

44.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Envoyproxy	Envoy	>= 1.26.0, < 1.26.7
Envoyproxy	Envoy	>= 1.27.0, < 1.27.3
Envoyproxy	Envoy	>= 1.28.0, < 1.28.1
Envoyproxy	Envoy	>= 1.29.0, < 1.29.1

References

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

Timeline

Published: Feb 9, 2024
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2024-23324?

How severe is CVE-2024-23324?

CVE-2024-23324 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.60% probability of exploitation in the next 30 days.

How do I fix CVE-2024-23324?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2024-23324?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST