CVE-2023-28679Network attack vector

Stored XSS via custom JavaScript portlets

Published Mar 23, 2023 · Updated Feb 24, 2025

Stored XSS in Jenkins Mashup Portlets Plugin 1.1.2 and earlier allows remote authenticated users to execute JavaScript in viewers' browsers. The Generic JS Portlet stores a user-supplied JavaScript expression and renders it as executable page content without neutralizing the script. Overall/Read permission is sufficient to plant the payload; execution occurs when another user views the affected portlet.

CVSS severity5.4
Medium
EPSS probability0.57%
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 Mashup Portlets Plugin 1.1.2 and earlier allows remote authenticated users to execute JavaScript in viewers' browsers. The Generic JS Portlet stores a user-supplied JavaScript expression and renders it as executable page content without neutralizing the script. Overall/Read permission is sufficient to plant the payload; execution occurs when another user views the affected portlet.

The record

CVE
CVE-2023-28679
Published
Mar 23, 2023
Updated
Feb 24, 2025
Vendor
Jenkins Project
Product
Jenkins Mashup Portlets Plugin
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 23, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 24, 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=0 <=1.1.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Jenkins Project · Jenkins Mashup Portlets Pluginversion=0 <=1.1.2

Published CVSS scores

5.4NIST NVDCVSS: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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