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CISA KEV · ACTIVELY EXPLOITED
HIGH severity

CVE-2020-5410 — spring-cloud-config-server

HIGH

CVE-2020-5410 is a high-severity (CVSS 7.5) CWE-23 vulnerability in org.springframework.cloud:spring-cloud-config-server. It is in CISA's Known Exploited Vulnerabilities catalog (added 2022-03-25) — treat it as actively exploited and patch now. A fix is available for org.springframework.cloud:spring-cloud-config-server — see the affected versions and patch details below.

Directory traversal attack in Spring Cloud Config

Also known asGHSA-32xf-jwmv-9hf3
Published
Updated
Affected
2 pkgs
Patched
2 / 2
Exploits
6 known
Exploitation data as of Oct 21, 2026 · OSV.dev, NVD, CISA KEV, FIRST.org (EPSS)

Exploitation Status

Actively exploited in the wild

  • Confirmed by CISA's Known Exploited Vulnerabilities catalog on 2022-03-25. Federal agencies were required to remediate by 2022-04-15.
  • CISA assesses this as automatable — exploitation doesn’t require manual, per-target effort, which raises the odds of mass scanning and opportunistic attacks.

Exploitation and automatability from CISA (KEV catalog and SSVC triage) for CVE-2020-5410.

EPSS Exploitation Probability

via FIRST.org ↗
95.6%probability of exploitation in next 30 days
Very High Risk0.00%
Lower risk than most CVEs100th percentile — riskier than 100% of all scored CVEsHighest risk
93.8%94.6%95.3%96.1%94.4%95.6%Apr 26Jul 26Oct 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

CVE-2020-5410 by exploitation likelihood (EPSS) against impact (CVSS). In the shaded patch-first corner (EPSS 50%+, CVSS 7.0+).

Where this sits among everything scored

Of 394,415 CVEs with a current EPSS score, this one falls in the ≥ 90% band (highlighted). Counts from FIRST.org, log-scaled.

Real-World Exposure

2 pkgs affected
☕org.springframework.cloud:spring-cloud-config-server☕org.springframework.cloud:spring-cloud-config-server

Real-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 Config, versions 2.2.x prior to 2.2.3, versions 2.1.x prior to 2.1.9, and older unsupported versions allow applications to serve arbitrary configuration files through the spring-cloud-config-server module. A malicious user, or attacker, can send a request using a specially crafted URL that can lead to a directory traversal attack.

Affected Packages

2 total 2 fixed
EcosystemPackageVulnerable rangeFix
☕Mavenorg.springframework.cloud:spring-cloud-config-server≥ 2.1.0&&< 2.1.92.1.9org.springframework.cloud:spring-cloud-config-server:2.1.9
☕Mavenorg.springframework.cloud:spring-cloud-config-server≥ 2.2.0&&< 2.2.32.2.3org.springframework.cloud:spring-cloud-config-server:2.2.3

Affected Products

1 product · 2 configurations
Application
spring cloud configvmware
≥ 2.2.0 && < 2.2.3
range
Exploits & PoCs
6

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

Detection & mitigation playbook

Open-source dependency
  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.springframework.cloud:spring-cloud-config-server, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update org.springframework.cloud:spring-cloud-config-server to 2.1.9 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2020-5410 is resolved across your whole dependency graph.

  3. Workarounds

    Resolve every user-supplied path to its canonical form and reject anything that escapes the intended directory, and run the component under an account that has no read or write access outside the directory it legitimately serves.

How to detect CVE-2020-5410

A community-maintained Nuclei template exists for this CVE. You can scan for it directly:

nuclei -id cve-2020-5410 -u https://target
Template
Spring Cloud Config Server - Local File Inclusion
Severity
high
Impact
An attacker can exploit this vulnerability to read arbitrary files from the server, potentially leading to unauthorized access or sensitive information disclosure.
Remediation
Upgrade to a patched version of Spring Cloud Config Server or apply the recommended security patches.

Template by ProjectDiscovery nuclei-templates (mavericknerd), MIT licensed. View the full template. Scan only systems you are authorised to test.

Fixing This On Your OS

If you run this on a Linux distribution, patch through your package manager against the distro's own security advisory below — it tracks the exact backported fix for your release, which can ship on a different timeline (and sometimes a different severity) than the upstream project.

Red HatImportant
Workaround published by Red Hat
Users of vulnerable versions or older, unsupported versions of spring-cloud-config-server should upgrade to a patched version. Spring-cloud-config-server should only be accessible on internal networks.
Source: Red Hat security advisory for CVE-2020-5410 (CC BY 4.0)
ProductFixed inAdvisory
Red Hat Fuse 7.8.0see advisoryRHSA-2020:5568
Red Hat Fuse 7.9spring-cloud-config-serverRHSA-2021:3140

Frequently Asked Questions

Spring Cloud Config, versions 2.2.x prior to 2.2.3, versions 2.1.x prior to 2.1.9, and older unsupported versions allow applications to serve arbitrary configuration files through the spring-cloud-config-server module. A malicious user, or attacker, can send a request using a specially crafted URL that can lead to a directory traversal attack.
O3 Security · Impact-Aware SCA

Is CVE-2020-5410 in your dependencies?

Find it across Maven, including transitive dependencies.

Actively Exploited: CVE-2020-5410: Path Traversal (High 7.5)