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Fencer Vulns
high 7.5

CVE-2023-27900 json

Denial of service in Jenkins Core

published 2023-03-08 3 y ago modified 2026-09-08 2 mo ago also BIT-jenkins-2023-27900 , EUVD-2023-1002 , GHSA-frgr-c5f2-8qhh

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.0%
EPSS 1.0% chance of exploitation in 30 days, percentile 62%
public exploits
0
none known

Summary

Jenkins 2.393 and earlier, LTS 2.375.3 and earlier uses the Apache Commons FileUpload library without specifying limits for the number of request parts introduced in version 1.5 for CVE-2023-24998 in hudson.util.MultipartFormDataParser, allowing attackers to trigger a denial of service.

Patch / fix

  • maven org.jenkins-ci.main:jenkins-core 2.375.4, 2.387.1, 2.394
  • bitnami jenkins 2.394.0
  • Jenkins Project Jenkins 2.394
  • jenkins ocp tools 4.13 2.387.3.1684911776-3.el8
  • jenkins-2-plugins ocp tools 4.13 4.13.1684911916-1.el8

red hat advisories RHSA-2023:3299

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-2023-27900 updated cvss 7.5

Jenkins: Denial of Service attack

  • Red Hat OpenShift Container Platform 3.11 jenkins
    affected: no fix planned “Out of support scope”
  • Red Hat OpenShift Container Platform 4 jenkins
    affected: no fix available
  • Red Hat OpenShift Developer Tools and Services for OCP 4.13 jenkins 2.387.3.1684911776-3.el8
    fixed: vendor fix RHSA-2023:3299
  • Red Hat OpenShift Developer Tools and Services for OCP 4.13 jenkins-2-plugins 4.13.1684911916-1.el8
    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

0.98% chance of exploitation in the next 30 days, higher than 62% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
GitHub 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
OSV 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
maven org.jenkins-ci.main:jenkins-core
>=2.388, <2.394
<2.375.4
>=2.376, <2.387.1
2.394
2.375.4
2.387.1
bitnami jenkins
<2.394.0
2.394.0

Affected products

  • Jenkins Project Jenkins

Classification

Weakness
  • CWE-770 Allocation of Resources Without Limits or Throttling
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.