CVE-2021-21603
published 2021-01-13CVE-2021-21603: 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.
PriorityP423medium5.4CVSS 3.1
AVNACLPRLUIRSCCLILAN
EPSS
1.03%
59.3th percentile
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.
Affected
9 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| jenkins | anything_goes_formatter_plugin | — | — |
| jenkins | bumblebee_hp_alm_plugin | — | — |
| jenkins | jenkins | <= 2.263.1 | — |
| jenkins | jenkins | <= 2.274 | — |
| jenkins | jenkins_core | — | — |
| jenkins | jenkins_lts | — | — |
| jenkins | jenkins_weekly | — | — |
| jenkins | tics_plugin | — | — |
| jenkins_project | jenkins | unspecified – 2.274 | — |
CVSS provenance
nvdv3.15.4MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
nvdv2.03.5LOWAV:N/AC:M/Au:S/C:N/I:P/A:N
vendor_redhat5.4MEDIUM
Stop checking back — get the weekly exploitation signal.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
OSV
XSS vulnerability in Jenkins notification bar
osv·2022-05-24
CVE-2021-21603 [MEDIUM] XSS vulnerability in Jenkins notification bar
XSS vulnerability in Jenkins notification bar
Jenkins 2.274 and earlier, LTS 2.263.1 and earlier does not escape notification bar response contents (typically shown after form submissions via Apply button).
This results in a cross-site scripting (XSS) vulnerability exploitable by attackers able to influence notification bar contents.
Jenkins 2.275, LTS 2.263.2 escapes the content shown in notification bars.
GHSA
XSS vulnerability in Jenkins notification bar
ghsa·2022-05-24
CVE-2021-21603 [MEDIUM] CWE-79 XSS vulnerability in Jenkins notification bar
XSS vulnerability in Jenkins notification bar
Jenkins 2.274 and earlier, LTS 2.263.1 and earlier does not escape notification bar response contents (typically shown after form submissions via Apply button).
This results in a cross-site scripting (XSS) vulnerability exploitable by attackers able to influence notification bar contents.
Jenkins 2.275, LTS 2.263.2 escapes the content shown in notification bars.
Jenkins
Jenkins Security Advisory 2021-01-13
vendor_jenkins·2021-01-13·CVSS 5.4
CVE-2018-1000862 [MEDIUM] Jenkins Security Advisory 2021-01-13
Title: Jenkins Security Advisory 2021-01-13
Jenkins Security Advisory 2021-01-13
Jenkins Security Home
For Administrators
Overview
Terminology
Vulnerabilities and Scoring
Security Advisories
Security Issues
Advisory Schedule
Vulnerabilities in Plugins
How We Fix Security Issues
For Reporters
Reporting Vulnerabilities
Jenkins CNA
For Maintainers
Overview
Vulnerabilities in Plugins
Jenkins Security Team
About
Contributions
This advisory announces vulnerabilities in the following Jenkins deliverables:
Jenkins (core)
Bumblebee HP ALM
Plugin
TICS
Plugin
tracetronic ecu.test
Plugin
Descriptions
XSS vulnerability in notification bar
SECURITY-1889
/
CVE-2021-21603
Severity (CV
Red Hat
jenkins: XSS vulnerability in notification bar
vendor_redhat·2021-01-13·CVSS 5.4
CVE-2021-21603 [MEDIUM] CWE-79 jenkins: XSS vulnerability in notification bar
jenkins: XSS vulnerability in notification bar
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.
A flaw was found in jenkins. A cross-site scripting (XSS) vulnerability is possible due to the contents of the notification bar responses not being properly escaped. The highest threat from this vulnerability is to data confidentiality and integrity.
Package: jenkins (Red Hat Fuse 7) - Not affected
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2021-01-13
Published