CVE-2022-34186
Published: 23 June 2022
Summary
CVE-2022-34186 is a medium-severity Cross-site Scripting (CWE-79) vulnerability in Jenkins Dynamic Extended Choice Parameter. Its CVSS base score is 5.4 (Medium).
Operationally, ranked in the top 6.8% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
The Jenkins Dynamic Extended Choice Parameter Plugin 1.0.1 and earlier contains a stored cross-site scripting vulnerability because it fails to escape the name and description fields of Moded Extended Choice parameters when rendering parameter views. This issue is tracked as CVE-2022-34186 with a CVSS 3.1 score of 5.4 and is classified under CWE-79.
Attackers who possess Item/Configure permission on a Jenkins instance can supply malicious payloads in those parameter fields. When other users subsequently view the affected parameter pages, the injected script executes in their browsers, enabling theft of session tokens or other client-side actions within the Jenkins context.
The official Jenkins security advisory for SECURITY-2784, published on 2022-06-22, documents the flaw and directs administrators to the corresponding plugin update that resolves the missing output encoding.
EPSS for this CVE rose from low values to a peak of 0.3160 on 2025-12-11 before receding to the current 0.0999, indicating that exploitation interest increased measurably after public disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2022-5972
Vulnerability details
Jenkins Dynamic Extended Choice Parameter Plugin 1.0.1 and earlier does not escape the name and description of Moded Extended Choice parameters on views displaying parameters, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers with Item/Configure permission.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Penetration testing submits XSS payloads to web applications, detecting cross-site scripting flaws for subsequent remediation.
Validates web inputs to reject script-related content that could produce XSS.
Output validation against expected content can reject or sanitize script content in generated web pages, reducing XSS exploitability.