CVE-2023-25761Network attack vector

Stored XSS via unescaped test class names

Published Feb 15, 2023 · Updated Mar 19, 2025

Stored XSS in Jenkins JUnit Plugin through 1166.va_436e268e972 allows remote authenticated users to execute script via test case class names. The plugin inserts attacker-controlled class names into JavaScript expressions without escaping while processing JUnit resources, storing the payload for later Jenkins UI rendering. Exploitation requires permission to influence processed test reports and a user to view the affected result, enabling script execution with that user's Jenkins session authority.

CVSS severity5.4
Medium
EPSS probability0.70%
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 JUnit Plugin through 1166.va_436e268e972 allows remote authenticated users to execute script via test case class names. The plugin inserts attacker-controlled class names into JavaScript expressions without escaping while processing JUnit resources, storing the payload for later Jenkins UI rendering. Exploitation requires permission to influence processed test reports and a user to view the affected result, enabling script execution with that user's Jenkins session authority.

The record

CVE
CVE-2023-25761
Published
Feb 15, 2023
Updated
Mar 19, 2025
Vendor
Jenkins Project
Product
JUnit Plugin
Classifications
CWE-79, T1189
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 15, 2023CVE publishedPublication date reported by the CVE source.
  2. Mar 19, 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=unspecified <=1166.va_436e268e972

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Jenkins Project · JUnit Pluginversion=unspecified <=1166.va_436e268e972

Published CVSS scores

5.4NVDCVSS: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')
T1189Drive-by Compromise

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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