CVE-2020-2111Network attack vector

Stored XSS via unescaped repository validation error

Published Feb 12, 2020 · Updated Aug 4, 2024

Stored XSS in Jenkins Subversion Plugin 2.13.0 and earlier allows remote authenticated users to execute script through a crafted base URL. The SubversionSCMSource validator passes printable exception text to errorWithMarkup without XML escaping, preserving attacker-controlled markup. Exploitation requires permission to configure a Multibranch Pipeline and a victim to view the stored validation error, enabling browser-context data access or actions.

CVSS severity5.4
Medium
EPSS probability0.93%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in Jenkins Subversion Plugin 2.13.0 and earlier allows remote authenticated users to execute script through a crafted base URL. The SubversionSCMSource validator passes printable exception text to errorWithMarkup without XML escaping, preserving attacker-controlled markup. Exploitation requires permission to configure a Multibranch Pipeline and a victim to view the stored validation error, enabling browser-context data access or actions.

The record

CVE
CVE-2020-2111
Published
Feb 12, 2020
Updated
Aug 4, 2024
Vendor
Jenkins Project
Product
Jenkins Subversion Plugin
Classifications
CWE-79, T1059.007
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 <=2.13.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Jenkins Project · Jenkins Subversion Pluginversion=unspecified <=2.13.0

Published CVSS scores

5.4GitHubCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/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-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007JavaScript/JScript

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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