# CVE-2025-46821

## Summary

- **CVE ID:** CVE-2025-46821
- **Severity:** MEDIUM
- **CVSS Score:** 5.3 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)
- **CWE:** CWE-186
- **Published:** May 7, 2025
- **Last Modified:** Mar 13, 2026

## 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

- envoyproxy — envoy (< 1.31.8)
- envoyproxy — envoy (>= 1.32.0, < 1.32.6)
- envoyproxy — envoy (>= 1.33.0, < 1.33.3)
- envoyproxy — envoy (>= 1.34.0, < 1.34.1)

## References

- [CNA](https://github.com/envoyproxy/envoy/security/advisories/GHSA-c7cm-838g-6g67)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.26%
- **EPSS Percentile:** 18.1

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._