CVE-2023-35942

MediumCVSS 6.5/10Last modified Jun 17, 2026

Description

Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to versions 1.27.0, 1.26.4, 1.25.9, 1.24.10, and 1.23.12, gRPC access loggers using listener's global scope can cause a `use-after-free` crash when the listener is drained. Versions 1.27.0, 1.26.4, 1.25.9, 1.24.10, and 1.23.12 have a fix for this issue. As a workaround, disable gRPC access log or stop listener update.

Metrics

CVSS 3.1 6.5/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-416

Affected software

Vendor	Product	Versions
envoyproxy	envoy	>= 1.26.0, < 1.26.4; >= 1.25.0, < 1.25.9; >= 1.24.0, < 1.24.10; < 1.23.12

References

https://github.com/envoyproxy/envoy/security/advisories/GHSA-69vr-g55c-v2v4Exploit, Third Party Advisory
https://github.com/envoyproxy/envoy/security/advisories/GHSA-69vr-g55c-v2v4Exploit, Third Party Advisory

Timeline

Published: Jul 25, 2023
Last modified: Jun 17, 2026
NVD status: Modified

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