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Fencer Vulns
critical 9.6

CVE-2023-27898 in the critical feed json

Cross-site Scripting vulnerability in Jenkins

published 2023-03-08 3 y ago modified 2026-09-08 2 mo ago also BIT-jenkins-2023-27898 , EUVD-2023-1045 , GHSA-j664-qhh4-hpf8

cvss
9.6
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.8%
EPSS 1.8% chance of exploitation in 30 days, percentile 79%
public exploits
0
none known

Summary

Jenkins 2.270 through 2.393 (both inclusive), LTS 2.277.1 through 2.375.3 (both inclusive) does not escape the Jenkins version a plugin depends on when rendering the error message stating its incompatibility with the current version of Jenkins, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers able to provide plugins to the configured update sites and have this message shown by Jenkins instances.

Patch / fix

  • maven org.jenkins-ci.main:jenkins-core 2.375.4, 2.394
  • bitnami jenkins 2.394.0
  • Jenkins Project Jenkins 2.375.4, 2.387.1, 2.394
  • jenkins ocp tools 4.11 2.401.1.1686831596-3.el8
  • jenkins-2-plugins ocp tools 4.11 4.11.1686831822-1.el8
  • haproxy openshift 4.10 2.2.19-4.el8
  • jenkins openshift 4.10 2.387.1.1680701869-1.el8
  • haproxy22 openshift 4.10 2.2.19-4.el8
  • openshift openshift 4.10 4.10.0-202303221742.p0.g16bcd69.assembly.stream.el7
  • openshift openshift 4.10 4.10.0-202303221742.p0.g16bcd69.assembly.stream.el8
  • jenkins-2-plugins openshift 4.10 4.10.1680703106-1.el8

red hat advisories RHSA-2023:3663RHSA-2023:1655

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-2023-27898 updated cvss 8.8

Jenkins: XSS vulnerability in plugin manager

  • Red Hat OpenShift Container Platform 3.11 jenkins
    affected: no fix planned “Out of support scope”
  • Red Hat OpenShift Developer Tools and Services for OCP 4.11 for RHEL 8 jenkins 2.401.1.1686831596-3.el8
    fixed: vendor fix RHSA-2023:3663
  • Red Hat OpenShift Container Platform 4.10 jenkins 2.387.1.1680701869-1.el8
    fixed: vendor fix RHSA-2023:1655
  • Red Hat OpenShift Developer Tools and Services for OCP 4.11 for RHEL 8 jenkins-2-plugins 4.11.1686831822-1.el8 Red Hat OpenShift Container Platform 4.10 haproxy 2.2.19-4.el8, haproxy22 2.2.19-4.el8, perf 4.18.0-305.85.1.el8_4, kernel 4.18.0-305.85.1.el8_4, bpftool 4.18.0-305.85.1.el8_4, toolbox 0.0.9-1.rhaos4.10.el8, +46 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

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
20 mo ago

Exploit prediction

1.84% chance of exploitation in the next 30 days, higher than 79% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 9.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
GitHub 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 3.1 9.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
CNA 3.1 9.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
OSV 3.1 9.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
maven org.jenkins-ci.main:jenkins-core
>=2.376, <2.394
<2.375.4
2.394
2.375.4
bitnami jenkins
>=2.270.0, <2.394.0
2.394.0

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.