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5.3 Medium

CVE-2025-46821 Envoy is a cloud-native edge/middle/service proxy

Description

Envoy is a cloud-native edge/middle/service proxy. Prior to versions 1.34.1, 1.33.3, 1.32.6, and 1.31.8, Envoy's URI template matcher incorrectly excludes the `*` character from a set of valid characters in the URI path. As a result URI path containing the `*` character will not match a URI template expressions. This can result in bypass of RBAC rules when configured using the `uri_template` permissions. This vulnerability is fixed in Envoy versions v1.34.1, v1.33.3, v1.32.6, v1.31.8. As a workaround, configure additional RBAC permissions using `url_path` with `safe_regex` expression.

Affected products and versions

Product Affected versions Fixed in
envoy 1.34 1.34.0 → < 1.34.1 1.34.1
envoy 1.33 1.33.0 → < 1.33.3 1.33.3
envoy 1.32 1.32.0 → < 1.32.6 1.32.6
envoy 1.31 earliest → < 1.31.8 1.31.8

References

Timeline

  1. Published
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Other CVEs of envoy

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CVE-2026-73511 Envoy is an open source edge and service proxy designed for cloud-native applications 5.3 Medium CVE-2026-73553 Envoy is an open source edge and service proxy designed for cloud-native applications 7.5 High CVE-2026-73551 Envoy is an open source edge and service proxy designed for cloud-native applications 5.3 Medium CVE-2026-73546 Envoy is an open source edge and service proxy designed for cloud-native applications 7.4 High
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