EUVD-2026-70150
GHSA-m2jq-fx7h-7hr9
Severity by source
AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
PR:L reflects plugin contributor access requirement; UI:R for victim page visit; S:C for browser-context scope change; no availability impact.
Primary rating from Vendor (jenkins).
CVSS VectorVendor: jenkins
Lifecycle Timeline
3DescriptionCVE.org
Jenkins update-center2 3.18.3 and earlier does not escape plugin-provided values (plugin names, descriptions, and version metadata) on plugin download index pages, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers able to provide a plugin for hosting.
AnalysisAI
Stored cross-site scripting in Jenkins update-center2 3.18.3 and earlier allows an attacker who can submit a plugin for hosting to inject malicious script into plugin download index pages by embedding payloads in plugin names, descriptions, or version metadata. Any user who browses the affected plugin index page triggers the XSS payload in their browser session. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the attacker to be able to contribute a plugin for hosting on the Jenkins update center - this implies either being an accepted Jenkins plugin contributor or compromising the credentials/pipeline of an existing contributor (PR:L). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 5.4 medium score is appropriate. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Upgrade Jenkins update-center2 to a version beyond 3.18.3; consult the Jenkins Security Advisory SECURITY-4038 at https://www.jenkins.io/security/advisory/2026-09-02/#SECURITY-4038 for the exact patched release version, as a specific fix version is not confirmed in the available input data. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-79 – Cross-site Scripting (XSS)
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External POC / Exploit Code
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