Gorouter is vulnerable to DoS attack via invalid HTTP responses
Priority LOW 36CWE-754Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
Cloud Foundry Routing (Gorouter) versions prior to 0.206.0 allow a malicious developer with "cf push" access to cause denial-of-service to the CF cluster by pushing an app that returns specially crafted HTTP responses that crash the Gorouters.
Why it matters now
EPSS 0.01183 67th percentileScored 2026-11-07
Fix Fixed Routing (Cloud Foundry): 0.206.0CF Deployment (Cloud Foundry): 13.15.0
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Cloud Foundry | Routing | All to before 0.206.0 | 0.206.0 | Patch available | CNA |
| Cloud Foundry | CF Deployment | All to before 13.15.0 | 13.15.0 | Patch available | CNA |
- Routing VendorCloud Foundry Affected All to before 0.206.0 Fixed in 0.206.0 Patch available CNA
- CF Deployment VendorCloud Foundry Affected All to before 13.15.0 Fixed in 13.15.0 Patch available CNA
CPE configurations NVD · 2
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:cloudfoundry:cf-deployment:*:*:*:*:*:*:*:* | before 13.15.0 | Vulnerable | CloudFoundry Foundation |
| cpe:2.3:a:cloudfoundry:gorouter:*:*:*:*:*:*:*:* | before 0.206.0 | Vulnerable | CloudFoundry Foundation |
- cpe:2.3:a:cloudfoundry:cf-deployment:*:*:*:*:*:*:*:* Versions before 13.15.0 Vulnerable ·CloudFoundry Foundation
- cpe:2.3:a:cloudfoundry:gorouter:*:*:*:*:*:*:*:* Versions before 0.206.0 Vulnerable ·CloudFoundry Foundation
Remediation
- Fix · CNA Routing (Cloud Foundry) Fixed in 0.206.0
- Fix · CNA CF Deployment (Cloud Foundry) Fixed in 13.15.0
Timeline
- 2026-10-02 Threatist record created from CVE-2020-5420
- 2026-10-03 Alias added: GHSA-jf63-p3cp-7qf7
References
More Cloud Foundry vulnerabilities
- TI-2018-11240 UAA Privilege Escalation CVSS 3.0CRITICAL 9.9
- TI-2018-01169 Log Cache logs UAA client secret on startup CVSS 3.0CRITICAL 9.8
- TI-2018-07868 Cloud Foundry UAA MFA does not prevent brute force of MFA code CVSS 3.0CRITICAL 9.8
- TI-2026-18259 Cloud Foundry UAA SAML 2.0 Signature Bypass CVSS 3.1HIGH 8.6
- TI-2019-02813 Java Projects using HTTP to fetch dependencies CVSS 3.1CRITICAL 9.8
- TI-2024-24613 Authentication bypass by spoofing in Cloud Foundry haproxy-boshrelease CVSS 3.1CRITICAL 9.1
Sources
- CVE-2020-5420 · CVE Program
- CVE-2020-5420 · NVD
- FIRST EPSS
- GHSA-jf63-p3cp-7qf7 · GitHub Advisory Database · CC BY 4.0
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