TI-2021-04746 Aliases CVE-2021-21666 GHSA-8h77-3xwr-hqhh

Cross-site scripting in Jenkins Kiuwan Plugin

LOW 30CWE-79Published 2021-06-10 · Updated 2024-08-03

Key facts

Attack vector: Network
Privileges required: None
User interaction: Required
Attack complexity: Low
Impact type: Cross-site scripting
Confidentiality · integrity · availability: Low · Low · None
Fix status: Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-79.

Summary

Jenkins Kiuwan Plugin 1.6.0 and earlier does not escape query parameters in an error message for a form validation endpoint, resulting in a reflected cross-site scripting (XSS) vulnerability.

Why it matters now

EPSS 0.01216 68th percentileScored 2026-11-07

Fix Fixed org.jenkins-ci.plugins:kiuwanJenkinsPlugin (Maven): 1.6.1

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Jenkins	Jenkins Kiuwan Plugin	up to 1.6.0	—	No fix listed	CNA
—	org.jenkins-ci.plugins:kiuwanJenkinsPlugin (Maven)	before 1.6.1	1.6.1	Patch available	GHSA-8h77-3xwr-hqhh

Jenkins Kiuwan Plugin VendorJenkins Affected up to 1.6.0 Fixed in — No fix listed CNA
org.jenkins-ci.plugins:kiuwanJenkinsPlugin (Maven) Vendor— Affected before 1.6.1 Fixed in 1.6.1 Patch available GHSA-8h77-3xwr-hqhh

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:jenkins:kiuwan::::::jenkins::*	up to 1.6.0	Vulnerable	Jenkins

cpe:2.3:a:jenkins:kiuwan:*:*:*:*:*:jenkins:*:* Versions up to 1.6.0 Vulnerable ·Jenkins

Remediation

Fix · GHSA-8h77-3xwr-hqhh org.jenkins-ci.plugins:kiuwanJenkinsPlugin (Maven) Fixed in 1.6.1 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2021-21666
2026-10-03 Alias added: GHSA-8h77-3xwr-hqhh

References

Advisory 3

Other 2

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences