CVE-2025-46821
May 07, 2025
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 Packages
https://github.com/envoyproxy/envoy.git (GITHUB):
Affected version(s) >=v1.0.0 <v1.31.8Fix Suggestion:
Update to version v1.31.8https://github.com/envoyproxy/envoy.git (GITHUB):
Affected version(s) >=v1.32.0 <v1.32.6Fix Suggestion:
Update to version v1.32.6https://github.com/envoyproxy/envoy.git (GITHUB):
Affected version(s) =v1.34.0 <v1.34.1Fix Suggestion:
Update to version v1.34.1https://github.com/envoyproxy/envoy.git (GITHUB):
Affected version(s) >=v1.33.0 <v1.33.3Fix Suggestion:
Update to version v1.33.3Related Resources (1)
Do you need more information?
Contact UsCVSS v4
Base Score:
6.9
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
NONE
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE
Weakness Type (CWE)
Overly Restrictive Regular Expression
EPSS
Base Score:
0.02
