CVE-2026-22726: CWE-923: Improper Restriction of Communication Channel to Intended Endpoints in CloudFoundry Foundation Routing release
CVE-2026-22726 is a vulnerability in CloudFoundry Foundation's Routing release that allows route services to send application traffic to network destinations outside of an app's configured egress rules. This can enable a malicious developer with access to CloudFoundry to configure a route-service that sends requests to HTTP services on internal networks reachable by the Gorouter, potentially bypassing intended network restrictions. The issue affects Routing release versions from v0. 118. 0 through v0. 371. 0 and CF Deployment versions from v0. 0. 2 through v54. 14.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-22726) involves improper restriction of communication channels (CWE-923) in CloudFoundry Foundation's Routing release. Specifically, route services can be misused to send application traffic to HTTP services on internal networks that should be inaccessible based on configured egress rules. A malicious developer with appropriate access can configure route-services to bypass these restrictions, potentially allowing unauthorized internal network communication. The affected versions include Routing release v0.118.0 through v0.371.0 and CF Deployment v0.0.2 through v54.14.0. The vendor has released fixed versions: Routing release v0.372.0 and CF Deployment v55.0.0 or later.
Potential Impact
The vulnerability allows a malicious developer to circumvent configured egress rules by leveraging route services to send traffic to internal HTTP services reachable by the Gorouter. This could lead to unauthorized internal network access from outside the application or network, potentially impacting availability but not confidentiality or integrity as per the CVSS vector (no confidentiality or integrity impact). No known exploits are reported in the wild.
Mitigation Recommendations
Upgrading to Routing release version v0.372.0 or greater and CF Deployment version v55.0.0 or greater is the official remediation. These versions include fixes that restrict route services from sending traffic outside of the intended egress rules. Patch status is confirmed by the version upgrade guidance. No additional mitigation steps are indicated by the vendor advisory.
CVE-2026-22726: CWE-923: Improper Restriction of Communication Channel to Intended Endpoints in CloudFoundry Foundation Routing release
Description
CVE-2026-22726 is a vulnerability in CloudFoundry Foundation's Routing release that allows route services to send application traffic to network destinations outside of an app's configured egress rules. This can enable a malicious developer with access to CloudFoundry to configure a route-service that sends requests to HTTP services on internal networks reachable by the Gorouter, potentially bypassing intended network restrictions. The issue affects Routing release versions from v0. 118. 0 through v0. 371. 0 and CF Deployment versions from v0. 0. 2 through v54. 14.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-22726) involves improper restriction of communication channels (CWE-923) in CloudFoundry Foundation's Routing release. Specifically, route services can be misused to send application traffic to HTTP services on internal networks that should be inaccessible based on configured egress rules. A malicious developer with appropriate access can configure route-services to bypass these restrictions, potentially allowing unauthorized internal network communication. The affected versions include Routing release v0.118.0 through v0.371.0 and CF Deployment v0.0.2 through v54.14.0. The vendor has released fixed versions: Routing release v0.372.0 and CF Deployment v55.0.0 or later.
Potential Impact
The vulnerability allows a malicious developer to circumvent configured egress rules by leveraging route services to send traffic to internal HTTP services reachable by the Gorouter. This could lead to unauthorized internal network access from outside the application or network, potentially impacting availability but not confidentiality or integrity as per the CVSS vector (no confidentiality or integrity impact). No known exploits are reported in the wild.
Mitigation Recommendations
Upgrading to Routing release version v0.372.0 or greater and CF Deployment version v55.0.0 or greater is the official remediation. These versions include fixes that restrict route services from sending traffic outside of the intended egress rules. Patch status is confirmed by the version upgrade guidance. No additional mitigation steps are indicated by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- vmware
- Date Reserved
- 2026-01-09T06:54:41.497Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69f3e778cbff5d8610b741a7
Added to database: 4/30/2026, 11:36:24 PM
Last enriched: 4/30/2026, 11:51:52 PM
Last updated: 5/1/2026, 12:54:05 AM
Views: 4
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