CVE-2021-43576Network attack vector

Authenticated secret disclosure or SSRF via XXE

Published Nov 12, 2021 · Updated Aug 4, 2024

XXE in Jenkins Project pom2config Plugin 1.2 and earlier allows remote authenticated users to read controller secrets or cause SSRF. The Pom2Config class accepts a crafted POM whose external-entity URI is dereferenced by the XML parser and incorporated into the parsed document. Overall/Read and Item/Read permissions are required, and parsing occurs as the Jenkins service account, exposing readable controller data or enabling server-side requests.

CVSS severity6.5
Medium
EPSS probability2.44%
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 Project pom2config Plugin 1.2 and earlier allows remote authenticated users to read controller secrets or cause SSRF. The Pom2Config class accepts a crafted POM whose external-entity URI is dereferenced by the XML parser and incorporated into the parsed document. Overall/Read and Item/Read permissions are required, and parsing occurs as the Jenkins service account, exposing readable controller data or enabling server-side requests.

The record

CVE
CVE-2021-43576
Published
Nov 12, 2021
Updated
Aug 4, 2024
Vendor
Jenkins Project
Product
pom2config Plugin
Classifications
CWE-611, T1212
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 12, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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=unspecified <=1.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Jenkins Project · pom2config Pluginversion=unspecified <=1.2

Published CVSS scores

6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
4.3NIST NVDAV:N/AC:M/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-611Improper Restriction of XML External Entity Reference
T1212Exploitation for Credential Access

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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