CVE-2026-22726 MEDIUM

CVE-2026-22726: Route Services Firewall Bypass

Vendor Cloudfoundry Foundation
Product Routing release
Weakness CWE-923
Published April 30, 2026
Last update May 1, 2026

CVSS base score

5.0/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality None
Integrity None

CVSS vector

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

What the vulnerability does

01Description

Route Services can be leveraged to send app traffic to network destinations outside of an app's configured egress rules. As a result, a malicious developer with access to Cloudfoundry could configure a route-service that would allow it to send requests to HTTP services on internal networks reachable by the Gorouter, which may not have previously had direct access from outside networks, or from the application. Routing release: affected from v0.118.0 through v0.371.0 (inclusive); upgrade to v0.372.0 or greater. CF Deployment: affected from v0.0.2 through v54.14.0 (inclusive); upgrade to v55.0.0 or greater (includes routing_release v0.372.0).

Key dates

02Disclosure timeline

April 30, 2026 CVE published
May 1, 2026 Record updated