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CVE-2023-35941

8.6
HIGHCVSS v3.1 Base Score
0.06%
LOW RiskEPSS (20th percentile)

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.

Published: 7/25/2023
Modified: 11/21/2024
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Vulnerability Summary

CVSS v3 Score

8.6HIGH

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

EPSS Score (Exploitation Probability)

0.06%LOW Exploitation Risk
20th percentile

This vulnerability has a 0.06% probability of being exploited in the next 30 days, ranking higher than 20% of all scored CVEs.

CWE Classification

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Similar SeverityHIGH