CVE-2020-36651Public exploitNetwork attack vector

Arbitrary file disclosure via unsanitized request paths

Published Jan 18, 2023 · Updated Nov 25, 2024

Path traversal in youngerheart web-node-server before 0.0.11 allows remote attackers to read arbitrary server files through crafted URLs. The start function joins request.url to the configured frontend path without removing dot-dot segments, letting the resolved path escape the web root. No authentication or user interaction is required; any network client that reaches the HTTP listener can retrieve readable local files.

CVSS severity7.5
High
EPSS probability0.89%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in youngerheart web-node-server before 0.0.11 allows remote attackers to read arbitrary server files through crafted URLs. The start function joins request.url to the configured frontend path without removing dot-dot segments, letting the resolved path escape the web root. No authentication or user interaction is required; any network client that reaches the HTTP listener can retrieve readable local files.

The record

CVE
CVE-2020-36651
Published
Jan 18, 2023
Updated
Nov 25, 2024
Vendor
youngerheart
Product
web-node-server
Classifications
CWE-22, T1190, T1005
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 18, 2023CVE publishedPublication date reported by the CVE source.
  2. Nov 25, 2024Record 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=n/a

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

youngerheart · web-node-serverversion=n/a

Published CVSS scores

7.5NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
7.5GitHubCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
5.5VulDBCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
5.2VulDBAV:A/AC:L/Au:S/C:P/I:P/A:P

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.

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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 exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1190Exploit Public-Facing Application
T1005Data from Local System

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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