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Fencer Vulns
medium 5.4

CVE-2020-2161 json

Improper Neutralization of Input During Web Page Generation in Jenkins

published 2020-03-25 6 y ago modified 2026-09-08 2 mo ago also BIT-jenkins-2020-2161 , EUVD-2020-22116 , GHSA-g8pg-qrvm-wgh2

cvss
5.4
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.2%
EPSS 1.2% chance of exploitation in 30 days, percentile 69%
public exploits
0
none known

Summary

Jenkins 2.227 and earlier, LTS 2.204.5 and earlier does not properly escape node labels that are shown in the form validation for label expressions on job configuration pages, resulting in a stored XSS vulnerability exploitable by users able to define node labels.

Patch / fix

  • maven org.jenkins-ci.main:jenkins-core 2.228
  • bitnami jenkins 2.227.1
  • cri-o openshift 4.3 1.16.6-15.dev.rhaos4.3.gitebc053b.el7
  • cri-o openshift 4.3 1.16.6-15.dev.rhaos4.3.gitebc053b.el8
  • conmon openshift 4.3 2:2.0.17-1.rhaos4.3.el7
  • conmon openshift 4.3 2:2.0.17-1.rhaos4.3.el8
  • jenkins openshift 4.3 2.222.1.1591349991-1.el7
  • openshift openshift 4.3 4.3.25-202006060952.git.1.96c30f6.el7
  • openshift openshift 4.3 4.3.25-202006060952.git.1.96c30f6.el8
  • s390utils openshift 4.3 2:2.6.0-23.el8

red hat advisories RHBA-2020:2435RHBA-2020:2477RHBA-2020:2444

  • jenkins Alpine 3.24, Alpine 3.23, Alpine 3.22 +11 more 2.228-r0

alpine advisories ALPINE-CVE-2020-2161

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2020-2161 updated cvss 5.4

jenkins: XSS in job configuration pages

  • Red Hat OpenShift Container Platform 3.11 jenkins 2.222.1.1591351669-1.el7
    fixed: vendor fix RHBA-2020:2477
  • Red Hat OpenShift Container Platform 4.3 s390utils 2.6.0-23.el8, s390utils-base 2.6.0-23.el8, conmon 2.0.17-1.rhaos4.3.el7, conmon 2.0.17-1.rhaos4.3.el8, s390utils-cmsfs 2.6.0-23.el8, s390utils-zdsfs 2.6.0-23.el8, +30 more
    fixed: vendor fix RHBA-2020:2435
  • Red Hat OpenShift Container Platform 4.4 conmon 2.0.17-1.rhaos4.4.el7, conmon 2.0.17-1.rhaos4.4.el8, jenkins 2.222.1.1591351066-1.el7, cri-o 1.17.4-14.dev.rhaos4.4.gitb93af5d.el7, cri-o 1.17.4-14.dev.rhaos4.4.gitb93af5d.el8, openshift 4.4.0-202006061254.git.1.dc84fb4.el7, +18 more
    fixed: vendor fix RHBA-2020:2444
  • Red Hat OpenShift Container Platform 3.11 python-openshift 0.6.4-2.el7, python2-openshift 0.6.4-2.el7, jenkins-2-plugins 3.11.1591354111-1.el7, prometheus 3.11.232-1.git.1.3c936ee.el7, cri-tools 1.11.1-3.rhaos3.11.gitedabfb5.el7, golang-github-cpuguy83-go-md2man 1.0.7-1.el7, +39 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.24% chance of exploitation in the next 30 days, higher than 69% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
GitHub 3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
NVD 3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
NVD 2.0 3.5 AV:N/AC:M/Au:S/C:N/I:P/A:N
OSV 3.1 5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Affected packages

ecosystem package affected fixed in
maven org.jenkins-ci.main:jenkins-core
<2.228
>=2.204.6, <2.228
2.228
bitnami jenkins
<2.227.1
2.227.1

Affected products

  • Jenkins project Jenkins

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.