What is CVE-2021-21648?

CVE-2021-21648 is a medium-severity vulnerability in Jenkins Credentials, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-05-11.

How severe is CVE-2021-21648?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Is CVE-2021-21648 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Jenkins Credentials

CVE-2021-21648

Jenkins Credentials Plugin 2.3.18 and earlier does not escape user-controlled information on a view it provides, resulting in a reflected cross-site scripting (XSS) vulnerability.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.113 (95.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Jenkins Credentials
Jenkins Project Credentials Plugin — versions unspecified, 2.3.0.1, 2.3.7.1

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

ARPSyndicate/cvemon

References

jenkinsci-cert@googlegroups.com (x_refsource_CONFIRM, Vendor Advisory)

Frequently asked questions

What is CVE-2021-21648?: CVE-2021-21648 is a medium-severity vulnerability in Jenkins Credentials, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-05-11.
How severe is CVE-2021-21648?: Medium severity. CVSS v3 base score is 6.1 out of 10.
Is CVE-2021-21648 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.