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TI-2021-04719 Aliases CVE-2021-21639GHSA-pvwx-3jx5-24r2

Improper input validation in Jenkins

Priority LOW 25CWE-20Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · Low · None
Fix status
Partial Red Hat: 2 fixed, 1 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA, GitHub and Red Hat.

Summary

Jenkins 2.286 and earlier, LTS 2.277.1 and earlier does not validate the type of object created after loading the data submitted to the `config.xml` REST API endpoint of a node, allowing attackers with Computer/Configure permission to replace a node with one of a different type.

Why it matters now

EPSS 0.02725 86th percentileScored 2026-11-07
Fix Partial org.jenkins-ci.main:jenkins-core (Maven): 2.277.2, 2.287Red Hat: 2 advisoriesRed Hat: 2 fixed, 1 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
JenkinsJenkinsup to 2.286; up to LTS 2.277.1—No fix listedCNA
—org.jenkins-ci.main:jenkins-core (Maven)before 2.277.22.277.2Patch availableGHSA-pvwx-3jx5-24r2
—org.jenkins-ci.main:jenkins-core (Maven)2.278 to before 2.2872.287Patch availableGHSA-pvwx-3jx5-24r2
  • Jenkins VendorJenkins Affected up to 2.286; up to LTS 2.277.1 Fixed in — No fix listed CNA
  • org.jenkins-ci.main:jenkins-core (Maven) Vendor— Affected before 2.277.2 Fixed in 2.277.2 Patch available GHSA-pvwx-3jx5-24r2
  • org.jenkins-ci.main:jenkins-core (Maven) Vendor— Affected 2.278 to before 2.287 Fixed in 2.287 Patch available GHSA-pvwx-3jx5-24r2

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:jenkins:jenkins:*:*:*:*:lts:*:*:*up to 2.277.1VulnerableJenkins
cpe:2.3:a:jenkins:jenkins:*:*:*:*:-:*:*:*up to 2.286VulnerableJenkins
  • cpe:2.3:a:jenkins:jenkins:*:*:*:*:lts:*:*:* Versions up to 2.277.1 Vulnerable ·Jenkins
  • cpe:2.3:a:jenkins:jenkins:*:*:*:*:-:*:*:* Versions up to 2.286 Vulnerable ·Jenkins

Remediation

  • Fix · GHSA-pvwx-3jx5-24r2 org.jenkins-ci.main:jenkins-core (Maven) Fixed in 2.277.2 Advisory →
  • Fix · GHSA-pvwx-3jx5-24r2 org.jenkins-ci.main:jenkins-core (Maven) Fixed in 2.287 Advisory →

Red Hat 2 advisories

  • RHSA-2021:2437 Released 2021-07-27 · Red Hat rating Moderate
    OpenShift Container Platform 4.8.2 packages and security update
    • Red Hat OpenShift Container Platform 4.8 afterburn-5.0.0-1.rhaos4.8.el8, atomic-openshift-service-idler-4.8.0-202106281541.p0.git.39cfc66.assembly.stream.el8, butane-0.12.1-1.rhaos4.8.el8 +47
  • RHSA-2021:1551 Released 2021-05-19 · Red Hat rating Moderate
    OpenShift Container Platform 4.7.11 security and bug fix update
    • Red Hat OpenShift Container Platform 4.7 cri-tools-1.20.0-2.el7, cri-tools-1.20.0-2.el8, jenkins-2.277.3.1620393611-1.el8 +2

Vendor assessments

Red Hat

Red Hat rating: Low. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat OpenShift Container Platform 3.11AffectedNo fix yet: Fix deferred
Red Hat OpenShift Container Platform 4.7Fixed RHSA-2021:1551
Red Hat OpenShift Container Platform 4.8Fixed RHSA-2021:2437
Not affected: 3 products
  • Red Hat Fuse 7
  • Red Hat OpenShift Container Platform 4.7
  • Red Hat OpenShift Container Platform 4.8

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-21639
  2. 2026-10-03 Alias added: GHSA-pvwx-3jx5-24r2

References

Advisory 3

Other 2

  • TI-2024-15885 Path traversal in Jenkins KEVCVSS 3.1CRITICAL 9.8
  • TI-2018-16080 A code execution vulnerability exists in the Stapler web framework used by Jenkins 2.153… KEVCVSS 3.1CRITICAL 9.8
  • TI-2017-14573 Jenkins versions 2.56 and earlier as well as 2.46.1 LTS and earlier are vulnerable to an… KEVCVSS 3.1CRITICAL 9.8
  • TI-2023-23979 The HTTP/2 protocol allows a denial of service (server resource consumption) because… KEVCVSS 3.1HIGH 7.5
  • TI-2015-04472 The Fingerprints pages in Jenkins before 1.638 and LTS before 1.625.2 might allow remote… KEVCVSS 3.1HIGH 7.5
  • TI-2016-07596 The remoting module in Jenkins before 2.32 and LTS before 2.19.3 allows remote attackers… CVSS 3.0CRITICAL 9.8
See all 293 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences