CVE-2020-2120Network attack vector

Secret extraction via insecure XML transformation

Published Feb 12, 2020 · Updated Aug 4, 2024

XXE in Jenkins Project FitNesse Plugin 1.30 and earlier allows remote authenticated users to read controller secrets via crafted test XML. The post-build path passes attacker-controlled results through TransformerFactory instances in ConvertReport and FitnessePlugin without secure processing, so external entities are resolved. Control of a post-build input file is required; exploitation can also issue server-side requests from the controller or interrupt service.

CVSS severity8.8
High
EPSS probability1.15%
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 FitNesse Plugin 1.30 and earlier allows remote authenticated users to read controller secrets via crafted test XML. The post-build path passes attacker-controlled results through TransformerFactory instances in ConvertReport and FitnessePlugin without secure processing, so external entities are resolved. Control of a post-build input file is required; exploitation can also issue server-side requests from the controller or interrupt service.

The record

CVE
CVE-2020-2120
Published
Feb 12, 2020
Updated
Aug 4, 2024
Vendor
Jenkins Project
Product
FitNesse Plugin
Classifications
CWE-611, T1212, T1499
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 12, 2020CVE 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 <=1.30

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Jenkins Project · FitNesse Pluginversion=unspecified <=1.30

Published CVSS scores

8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
6.5NIST NVDAV:N/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 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
T1499Endpoint Denial of Service

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.

Technologies

Your stack

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Your stack

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