Jenkins Cross-site Scripting vulnerability
ExpandableDetailsNote allows annotating build log content with additional information that can be revealed when interacted with.
Jenkins 2.423 and earlier, LTS 2.414.1 and earlier does not escape the value of the caption constructor parameter of ExpandableDetailsNote.
This results in a stored cross-site scripting (XSS) vulnerability exploitable by attackers able to provide caption parameter values.
As of publication, the related API is not used within Jenkins (core), and the Jenkins security team is not aware of any affected plugins.
Jenkins 2.424, LTS 2.414.2 escapes caption constructor parameter values.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Java / Kotlin (Maven) | org.jenkins-ci.main:jenkins-core | >= 2.50, < 2.414.2, >= 2.415, < 2.424 | 2.414.2, 2.424 |
References
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H- Weakness (CWE)
CWE-79- Platform
- Java / Kotlin (Maven)
- Package
org.jenkins-ci.main:jenkins-core- Disclosed
- 20.09.2023
- Updated
- 11.10.2026 11:21
Sources and licenses
OSV / GitHub Advisory Database - GHSA-5j46-5hwq-gwh7 - CC BY 4.0
Vulnerability history: org.jenkins-ci.main:jenkins-core
All published vulnerabilities of this package (Java / Kotlin (Maven)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 259
- First → latest
- 01.2022 06.2026
- Without a fix
- 1
- Exploited in attacks
- 4
Severity breakdown
- Critical 19
- High 62
- Medium 158
- Low 20
Disclosures per year
- 2022: 213
- 2023: 14
- 2024: 6
- 2025: 14
- 2026: 12
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Jenkins Cross-site Scripting vulnerability this entry
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