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CVE-2025-46821

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CVE-2025-46821

Published: May 7, 2025

Modified: May 8, 2025

PUBLISHED

CVSS v3.1

5.3

MEDIUM

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.

VendorProductVersions

envoyproxy

envoy

affected
< 1.31.8
affected
>= 1.32.0, < 1.32.6
affected
>= 1.33.0, < 1.33.3
affected
>= 1.34.0, < 1.34.1

Weaknesses (CWE)

CWE-186

CVSS v3.1 Details

CVSS v3.1 Vector

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

References

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