What is CVE-2021-21628?

CVE-2021-21628 is a medium-severity vulnerability in Jenkins Build_with_parameters, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-03-30.

How severe is CVE-2021-21628?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Jenkins Build_with_parameters

CVE-2021-21628

Jenkins Build With Parameters Plugin 1.5 and earlier does not escape parameter names and descriptions, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers with Job/Configure permission.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.819 (99.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

Affected products

Jenkins Build_with_parameters
Jenkins Project Build With Parameters Plugin — versions unspecified

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

jenkinsci-cert@googlegroups.com (x_refsource_CONFIRM, Vendor Advisory)
jenkinsci-cert@googlegroups.com (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2021-21628?: CVE-2021-21628 is a medium-severity vulnerability in Jenkins Build_with_parameters, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-03-30.
How severe is CVE-2021-21628?: Medium severity. CVSS v3 base score is 5.4 out of 10.