CVE-2025-46821

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.

Scoring

Severity

MEDIUM

CVSS base score

5.3

CVSS vector

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

EPSS probability

0.26%

CWE

CWE-186

Published

2025-05-07

Last modified

2026-03-13

Affected products

• envoyproxy envoy
• envoyproxy envoy
• envoyproxy envoy
• envoyproxy envoy

Weakness type

• CWE-186

Related vulnerabilities

• CVE-2026-47241 — Net::IMAP: Denial of Service via incomplete raw argument validation

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