What’s Vulnerable › Vulnerabilities

CVE-2019-3789: Gorouter allows space developer to hijack route services hosted outside the platform

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-04-24 · updated 2026-06-17
• Weakness: CWE-840

Description

Cloud Foundry Routing Release, all versions prior to 0.188.0, contains a vulnerability that can hijack the traffic to route services hosted outside the platform. A user with space developer permissions can create a private domain that shadows the external domain of the route service, and map that route to an app. When the gorouter receives traffic destined for the external route service, this traffic will instead be directed to the internal app using the shadow route.

Affected products

• Cloud Foundry Routing: before 0.188.0 — fixed in 0.188.0

How to fix

Upgrade to a fixed version: Cloud Foundry Routing 0.188.0. Check the vendor advisory for mitigations.

References

• https://www.cloudfoundry.org/blog/cve-2019-3789
• https://www.cloudfoundry.org/blog/cve-2019-3789

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