CVE-2020-5412 — spring-cloud-netflix
MEDIUMCVE-2020-5412 is a medium-severity (CVSS 6.5) CWE-441 vulnerability in org.springframework.cloud:spring-cloud-netflix. EPSS puts its 30-day exploitation probability at 10.2% (96th percentile). A fix is available for org.springframework.cloud:spring-cloud-netflix — see the affected versions and patch details below.
Externally Controlled Reference to a Resource in Another Sphere and Confused Deputy in Spring Cloud Netflix
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
How urgent is this, really
CVE-2020-5412 by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.
Where this sits among everything scored
Of 385,738 CVEs with a current EPSS score, this one falls in the 10–50% band (highlighted). Counts from FIRST.org, log-scaled.
Real-World Exposure
org.springframework.cloud:spring-cloud-netflix☕org.springframework.cloud:spring-cloud-netflixReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.
Description
Spring Cloud Netflix, versions 2.2.x prior to 2.2.4, versions 2.1.x prior to 2.1.6, and older unsupported versions allow applications to use the Hystrix Dashboard proxy.stream endpoint to make requests to any server reachable by the server hosting the dashboard. A malicious user, or attacker, can send a request to other servers that should not be exposed publicly.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| ☕Maven | org.springframework.cloud:spring-cloud-netflix | ≥ 2.2.0&&< 2.2.4 | 2.2.4org.springframework.cloud:spring-cloud-netflix:2.2.4 |
| ☕Maven | org.springframework.cloud:spring-cloud-netflix | ≥ 2.1.0&&< 2.1.6 | 2.1.6org.springframework.cloud:spring-cloud-netflix:2.1.6 |
Affected Products
spring cloud netflixvmwareDetection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.springframework.cloud:spring-cloud-netflix, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update org.springframework.cloud:spring-cloud-netflix to 2.2.4 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2020-5412 is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How to detect CVE-2020-5412
A community-maintained Nuclei template exists for this CVE. You can scan for it directly:
nuclei -id cve-2020-5412 -u https://target- Template
- Spring Cloud Netflix - Server-Side Request Forgery
- Severity
- medium
- Impact
- The vulnerability can result in unauthorized access to sensitive data or systems, leading to potential data breaches or further exploitation.
- Remediation
- Apply the latest security patches or updates provided by Spring Cloud Netflix to mitigate the vulnerability.
Template by ProjectDiscovery nuclei-templates (dwisiswant0), MIT licensed. View the full template. Scan only systems you are authorised to test.
Frequently Asked Questions
Is CVE-2020-5412 in your dependencies?
Find it across Maven, including transitive dependencies.