CVE-2023-37942Public exploitNetwork attack vector

Authenticated file read via unrestricted external entities

Published Jul 12, 2023 · Updated Nov 7, 2024

XXE in Jenkins External Monitor Job Type Plugin 206.v9a_94ff0b_4a_10 and earlier allows remote authenticated users to read controller files. ExternalRun.acceptRemoteSubmission passes the POST body to XMLInputFactory.createXMLStreamReader without disabling DTDs or external entities. Item/Build permission and an existing external job are required; crafted XML can exfiltrate controller secrets or make server-side requests.

CVSS severity6.5
Medium
EPSS probability0.61%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

XXE in Jenkins External Monitor Job Type Plugin 206.v9a_94ff0b_4a_10 and earlier allows remote authenticated users to read controller files. ExternalRun.acceptRemoteSubmission passes the POST body to XMLInputFactory.createXMLStreamReader without disabling DTDs or external entities. Item/Build permission and an existing external job are required; crafted XML can exfiltrate controller secrets or make server-side requests.

The record

CVE
CVE-2023-37942
Published
Jul 12, 2023
Updated
Nov 7, 2024
Vendor
Jenkins Project
Product
External Monitor Job Type Plugin
Classifications
CWE-611, T1005
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 12, 2023CVE publishedPublication date reported by the CVE source.
  2. Nov 7, 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=0 <=206.v9a_94ff0b_4a_10

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Jenkins Project · External Monitor Job Type Pluginversion=0 <=206.v9a_94ff0b_4a_10

Published CVSS scores

6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-611Improper Restriction of XML External Entity Reference
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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