CVE-2025-46821
Last modified
CVE-2025-46821 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. 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. EPSS estimates a 0.22% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| 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 |
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
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