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Case File

CVE-2021-21603

MEDIUM · CVSS 5.4 EPSS 1.03%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-01-13 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 5.4. It affects Jenkins.

CVE
CVE-2021-21603
Severity
MEDIUM
CVSS
5.4
EPSS
1.03%
Jenkins

Original NVD Description

Jenkins 2.274 and earlier, LTS 2.263.1 and earlier does not escape notification bar response contents, resulting in a cross-site scripting (XSS) vulnerability.

Related CVEs

Other vulnerabilities affecting the same vendor(s)

CVE-2026-57307 MEDIUM CVE-2026-57306 MEDIUM CVE-2026-57305 MEDIUM CVE-2026-57304 MEDIUM CVE-2026-57303 HIGH CVE-2026-57302 MEDIUM