CVE-2026-22726: CWE-923: Improper Restriction of Communication Channel to Intended Endpoints in CloudFoundry Foundation Routing release
CVE-2026-22726 is a medium severity vulnerability in the CloudFoundry Foundation Routing release that allows a malicious developer to configure route services to send application traffic to network destinations outside of the app's configured egress rules. This improper restriction of communication channels can enable access to internal HTTP services reachable by the Gorouter that were not previously accessible from outside networks or the application itself. The vulnerability 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) in CloudFoundry Foundation's Routing release involves improper restriction of communication channels (CWE-923). Specifically, route services can be misused by a malicious developer with access to CloudFoundry to route app traffic to HTTP services on internal networks beyond the app's configured egress rules. This could expose internal network services reachable by the Gorouter that were previously inaccessible externally or from the application. The issue affects Routing release versions v0.118.0 through v0.371.0 and CF Deployment versions v0.0.2 through v54.14.0. The vendor recommends upgrading to Routing release v0.372.0 or later and CF Deployment v55.0.0 or later, which include the fix.
Potential Impact
The vulnerability allows a malicious developer to bypass configured egress restrictions by leveraging route services to send traffic to internal HTTP services accessible via the Gorouter. This could lead to unintended network communication and potential disruption of availability (as indicated by the CVSS vector showing impact on availability). There is no direct impact on confidentiality or integrity reported. No known exploits have been observed in the wild.
Mitigation Recommendations
A fix is available by upgrading to Routing release version v0.372.0 or greater and CF Deployment version v55.0.0 or greater, which include the necessary remediation. Since the vendor advisory indicates these versions address the issue, applying these upgrades is the recommended mitigation. Patch status is confirmed by the vendor's version guidance. No additional mitigation steps are indicated.
CVE-2026-22726: CWE-923: Improper Restriction of Communication Channel to Intended Endpoints in CloudFoundry Foundation Routing release
Description
CVE-2026-22726 is a medium severity vulnerability in the CloudFoundry Foundation Routing release that allows a malicious developer to configure route services to send application traffic to network destinations outside of the app's configured egress rules. This improper restriction of communication channels can enable access to internal HTTP services reachable by the Gorouter that were not previously accessible from outside networks or the application itself. The vulnerability affects Routing release versions from v0.118.0 through v0.371.0 and CF Deployment versions from v0.0.2 through v54.14.
CVSS v3.1
Score 5.0medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-22726) in CloudFoundry Foundation's Routing release involves improper restriction of communication channels (CWE-923). Specifically, route services can be misused by a malicious developer with access to CloudFoundry to route app traffic to HTTP services on internal networks beyond the app's configured egress rules. This could expose internal network services reachable by the Gorouter that were previously inaccessible externally or from the application. The issue affects Routing release versions v0.118.0 through v0.371.0 and CF Deployment versions v0.0.2 through v54.14.0. The vendor recommends upgrading to Routing release v0.372.0 or later and CF Deployment v55.0.0 or later, which include the fix.
Potential Impact
The vulnerability allows a malicious developer to bypass configured egress restrictions by leveraging route services to send traffic to internal HTTP services accessible via the Gorouter. This could lead to unintended network communication and potential disruption of availability (as indicated by the CVSS vector showing impact on availability). There is no direct impact on confidentiality or integrity reported. No known exploits have been observed in the wild.
Mitigation Recommendations
A fix is available by upgrading to Routing release version v0.372.0 or greater and CF Deployment version v55.0.0 or greater, which include the necessary remediation. Since the vendor advisory indicates these versions address the issue, applying these upgrades is the recommended mitigation. Patch status is confirmed by the vendor's version guidance. No additional mitigation steps are indicated.
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: 5/8/2026, 2:15:45 AM
Last updated: 6/15/2026, 3:20:08 AM
Views: 71
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