CVE-2021-21603

At a glance

Severity: Not available
EPSS: EPSS 1.04 % · percentile 64 (2026-10-27)
State: PUBLISHED
Published: 2021-01-13
Updated: 2024-08-03
Assigner: jenkins
NVD status: Modified

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.

Scores

Version	Score	Vector	Scored by
CVSS 3.1	MEDIUM 5.4	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N	NVD · nvd@nist.gov (Primary)
CVSS 2.0	LOW 3.5	AV:N/AC:M/Au:S/C:N/I:P/A:N	NVD · nvd@nist.gov (Primary)

Weaknesses (CWE)

CWE-79

Advisories

GHSA-98gq-6hxg-52r6 — XSS vulnerability in Jenkins notification bar

European references

ENISA EUVD · EUVD-2022-3324
GCVE · GCVE-0-2021-21603

Affected configurations (NVD CPE)

cpe:2.3:a:jenkins:jenkins:*:*:*:*:lts:*:*:* ≤ 2.263.1
cpe:2.3:a:jenkins:jenkins:*:*:*:*:-:*:*:* ≤ 2.274

Affected products

Product	Versions
Jenkins project · Jenkins	affected unspecified ≤ 2.274 ; affected unspecified ≤ LTS 2.263.1

References

https://www.jenkins.io/security/advisory/2021-01-13/#SECURITY-1889

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD