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Vulnerabilities

Vulnerability · CVE-2018-1000861

Jenkins Stapler Web Framework Deserialization of Untrusted Data Vulnerability

Published Dec 10, 2018 · catalog updated Jun 16, 2026 · Jenkins Jenkins Stapler Web Framework

Patch now

CVE-2018-1000861 is in the CISA known-exploited catalog, due Aug 10, 2022. Confirm Jenkins Jenkins Stapler Web Framework against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Severity
Critical9.8
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
98.33%
Remediation
Remediation guidance
Affected products
cpe jenkins/jenkins · cpe redhat/openshift container platform · vendor Jenkins Jenkins Stapler Web Framework

A code execution vulnerability exists in the Stapler web framework used by Jenkins 2.153 and earlier, LTS 2.138.3 and earlier in stapler/core/src/main/java/org/kohsuke/stapler/MetaClass.java that allows attackers to invoke some methods on Java objects by accessing crafted URLs that were not intended to be invoked this way.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe jenkins/jenkinsversion unspecified
  • cpe redhat/openshift container platform3.11
  • vendor Jenkins Jenkins Stapler Web Frameworkversion unspecified

How to fix CVE-2018-1000861

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2018-1000861 is in the CISA known-exploited catalog, due Aug 10, 2022. Confirm Jenkins Jenkins Stapler Web Framework against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Compare what you have installed with redhat/openshift container platform 3.11. Apply updates per vendor instructions.

What should an analyst verify?

CWE-502: Deserialization of Untrusted Data. EPSS 98.33%. The CISA KEV listing is the exploitation evidence. A public exploit reference is linked in Sources. That is not the same as confirmed exploitation. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Dec 10, 2018 · Catalog

    Detected

    A code execution vulnerability exists in the Stapler web framework used by Jenkins 2.153 and earlier, LTS 2.138.3 and earlier in stapler/core/src/main/java/org/kohsuke/stapler/MetaClass.java that allows attackers to invoke some methods on Java objects by accessing crafted URLs that were not intended to be invoked this way.

  2. Feb 10, 2022 · CISA KEV

    Known exploited

    Apply updates per vendor instructions.

  3. Aug 10, 2022 · CISA KEV

    Remediation due

    Apply updates per vendor instructions.

  4. Jun 16, 2026 · Catalog

    Updated

    A code execution vulnerability exists in the Stapler web framework used by Jenkins 2.153 and earlier, LTS 2.138.3 and earlier in stapler/core/src/main/java/org/kohsuke/stapler/MetaClass.java that allows attackers to invoke some methods on Java objects by accessing crafted URLs that were not intended to be invoked this way.

Sources

  • CISA KEVConfirmed exploitationCVE-2018-1000861

    A code execution vulnerability exists in the Stapler web framework used by Jenkins

    cisa.gov
  • CVE.orgVulnerability recordCVE-2018-1000861

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2018-1000861

    30-day exploitation probability 98.3%

    first.org
  • Metasploit ModulesPublic exploit moduleexploit_multi/http/jenkins_metaprogramming

    Public module reference (excellent). Module source is not copied into this catalog.

    rapid7.com
  • NIST NVDVulnerability recordCVE-2018-1000861

    A code execution vulnerability exists in the Stapler web framework used by Jenkins 2.153 and earlier, LTS 2.138.3 and earlier in stapler/core/src/main/java/org/kohsuke/stapler/MetaClass.java that allows attackers to invoke some methods on Java objects by accessing crafted URLs th

    nvd.nist.gov
  • Packet Storm SecurityCited referencehttp://packetstormsecurity.com/files/166778/Jenkins-Remote-Code-Execution.html

    Packet Storm link already published on the finding.

    packetstormsecurity.com
  • VulnCheck KEVConfirmed exploitationCVE-2018-1000861

    A code execution vulnerability exists in the Stapler web framework used by Jenkins

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.