CVE-2025-46821

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.

Reserved 2025-04-30 | Published 2025-05-07 | Updated 2025-05-08 | Assigner GitHub_M

Problem types

CWE-186: Overly Restrictive Regular Expression

Product status

< 1.31.8
affected

>= 1.32.0, < 1.32.6
affected

>= 1.33.0, < 1.33.3
affected

>= 1.34.0, < 1.34.1
affected

References

github.com/.../envoy/security/advisories/GHSA-c7cm-838g-6g67

cve.org (CVE-2025-46821)

nvd.nist.gov (CVE-2025-46821)

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