CVE-2026-22726Network attack vector

Firewall bypass via unchecked route-service targets

Published Apr 30, 2026 · Updated Apr 30, 2026

Firewall bypass in Cloud Foundry routing-release and cf-deployment allows remote authenticated users to reach internal HTTP services. Gorouter accepts a route-service target URL or IP address without sufficient validation and proxies requests outside the application's configured egress rules. Exploitation requires Cloud Foundry developer access and enabled route services; the published impact is limited to availability of reachable internal services.

CVSS severity5.0
Medium
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Firewall bypass in Cloud Foundry routing-release and cf-deployment allows remote authenticated users to reach internal HTTP services. Gorouter accepts a route-service target URL or IP address without sufficient validation and proxies requests outside the application's configured egress rules. Exploitation requires Cloud Foundry developer access and enabled route services; the published impact is limited to availability of reachable internal services.

The record

CVE
CVE-2026-22726
Published
Apr 30, 2026
Updated
Apr 30, 2026
Vendor
Cloud Foundry Foundation
Product
cf-deployment
Classifications
CWE-923, T1090
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 30, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 30, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=v0.0.2 <v55.0.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Cloud Foundry Foundation · cf-deploymentversion=v0.0.2 <v55.0.0
Cloud Foundry Foundation · Routing Releaseversion=v0.118.0 <v0.372.0

Published CVSS scores

5.0VMwareCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-923Improper Restriction of Communication Channel to Intended Endpoints
T1090Proxy

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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