CVE-2021-21666

medium

Description

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.

References

https://www.jenkins.io/security/advisory/2021-06-10/#SECURITY-2367

http://www.openwall.com/lists/oss-security/2021/06/10/14

Details

Source: Mitre, NVD

Published: 2021-06-10

Updated: 2026-06-17

Risk Information

CVSS v2

Base Score: 4.3

Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N

Severity: Medium

CVSS v3

Base Score: 6.1

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N