What is CVE-2021-21635?

CVE-2021-21635 is a medium-severity vulnerability in Jenkins Rest List Parameter, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-03-30.

How severe is CVE-2021-21635?

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

XSS in Jenkins Rest List Parameter

CVE-2021-21635

Jenkins REST List Parameter Plugin 1.3.0 and earlier does not escape a parameter name reference in embedded JavaScript, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers with Job/Configure permission.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.088 (94.6th 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 Rest_list_parameter
Jenkins Project Rest List Parameter 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-2021-21635?: CVE-2021-21635 is a medium-severity vulnerability in Jenkins Rest List Parameter, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-03-30.
How severe is CVE-2021-21635?: Medium severity. CVSS v3 base score is 5.4 out of 10.