CyberRota Analysis
AI-GeneratedEnvoy's admin endpoint prior to specified versions is vulnerable to Cross-Site Scripting (XSS) due to improper HTML encoding of statistic names, allowing attackers to inject malicious scripts that can execute within the context of the admin interface. This vulnerability poses a significant risk to organizations using Envoy, particularly those with browser-accessible admin interfaces and enabled components that allow for dynamic statistic name generation. Administrators should prioritize updating to the fixed versions to mitigate the risk of unauthorized access and potential exploitation.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
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Original NVD Description
Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to 1.36.10, 1.37.6, 1.38.4, and 1.39.1, Envoy's /stats?format=html admin endpoint uses StatsHtmlRender, which sanitizes string statistic values but emits statistic names without HTML encoding. A data-plane component such as grpc_stats with stats_for_all_methods enabled can incorporate attacker-controlled path segments into cached dynamic statistic names. When an operator views the HTML stats page, the stored name can execute script with the admin interface's origin and issue privileged same-origin requests. The relevant scope boundary is that the admin interface must be browser-accessible and an enabled component must persist attacker-influenced text in statistic names. This issue is fixed in versions 1.36.10, 1.37.6, 1.38.4, and 1.39.1.
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