High severity8.6NVD Advisory· Published Jul 25, 2023· Updated Jun 17, 2026
CVE-2023-35941
CVE-2023-35941
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, a malicious client is able to construct credentials with permanent validity in some specific scenarios. This is caused by the some rare scenarios in which HMAC payload can be always valid in OAuth2 filter's check. 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, avoid wildcards/prefix domain wildcards in the host's domain configuration.
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Affected products
4cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*range: >=1.23.0,<1.23.12
- (no CPE)range: >= 1.26.0, < 1.26.4
Patches
Vulnerability mechanics
References
1- github.com/envoyproxy/envoy/security/advisories/GHSA-7mhv-gr67-hq55nvdThird Party Advisory
News mentions
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