CVE-2020-5410Known exploitationNetwork attack vector

Arbitrary file disclosure via encoded path traversal

Published Jun 2, 2020 · Updated Oct 21, 2025

Path traversal in Spring Cloud Config 2.1.0 through 2.1.8 and 2.2.0 through 2.2.2 allows remote attackers to read arbitrary files. EnvironmentController normalizes encoded name and label path segments before repository lookup without first rejecting traversal sequences. Exposure requires network access to the Config Server; Spring advises restricting it to internal clients and protecting it with authentication.

CVSS severity7.5
High
EPSS probability95.59%
Next 30 days · Sep 16, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in Spring Cloud Config 2.1.0 through 2.1.8 and 2.2.0 through 2.2.2 allows remote attackers to read arbitrary files. EnvironmentController normalizes encoded name and label path segments before repository lookup without first rejecting traversal sequences. Exposure requires network access to the Config Server; Spring advises restricting it to internal clients and protecting it with authentication.

The record

CVE
CVE-2020-5410
Published
Jun 2, 2020
Updated
Oct 21, 2025
Vendor
Spring
Product
Spring Cloud Config
Classifications
CWE-23, CWE-22, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 2, 2020CVE publishedPublication date reported by the CVE source.
  2. Oct 21, 2025Record 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=2.1 <2.1.9
  2. Affected versionversion=2.2 <2.2.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Spring · Spring Cloud Configversion=2.1 <2.1.9; version=2.2 <2.2.3

Published CVSS scores

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
5.0NIST NVDAV:N/AC:L/Au:N/C:P/I:N/A:N
7.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

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
Privilegesunauthenticated
Known exploitationReported
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-23Relative Path Traversal
CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1190Exploit Public-Facing Application

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.

Reported exploitation

Technologies

Your stack

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Your stack

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