CVE-2020-13924Public exploitNetwork attack vector

Arbitrary file download via URI normalization mismatch

Published Mar 17, 2021 · Updated Feb 13, 2025

Path traversal in Apache Ambari 2.6.2.2 and earlier allows remote attackers to download files outside authorized directories. AmbariAuthorizationFilter authorizes the raw request URI, while the web server normalizes a crafted semicolon traversal before resolving the resource. A path such as /bootstrap/..;/users therefore passes a less-restricted route check and reaches protected APIs, exposing files readable by the server.

CVSS severity7.5
High
EPSS probability4.04%
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 Apache Ambari 2.6.2.2 and earlier allows remote attackers to download files outside authorized directories. AmbariAuthorizationFilter authorizes the raw request URI, while the web server normalizes a crafted semicolon traversal before resolving the resource. A path such as /bootstrap/..;/users therefore passes a less-restricted route check and reaches protected APIs, exposing files readable by the server.

The record

CVE
CVE-2020-13924
Published
Mar 17, 2021
Updated
Feb 13, 2025
Vendor
The Apache Software Foundation
Product
Apache Ambari
Classifications
CWE-22, T1005, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 17, 2021CVE publishedPublication date reported by the CVE source.
  2. Feb 13, 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=Apache Ambari <=2.6.2.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Apache Software Foundation · Apache Ambariversion=Apache Ambari <=2.6.2.2

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

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 exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

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

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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