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Vulnerability record · CVE-2021-21648 · published 11 May 2021

CVE-2021-21648: Jenkins credentials cross-site scripting vulnerability

Jenkins · Credentials

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.

6.1 CVSS 3.1 Medium EPSS 11% · top 4.2% CWE-79 · Cross-site scripting
6.1CVSS 3.1 base score, v2 4.3
11%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

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.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://www.jenkins.io/security/advisory/2021-05-11/#SECURITY-2349 Vendor Advisory
https://www.jenkins.io/security/advisory/2021-05-11/#SECURITY-2349 Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2021-21648), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.