Critical 9.8Known exploited (CISA KEV)Published Dec 10, 2018

CVE-2018-1000861A 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 all…

Updated under an hour ago (Oct 27, 2026, 1:50 PM ET)

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CISA lists it as known exploited since Feb 10, 2022; federal agencies had to remediate by Aug 10, 2022. Treat that date as your deadline.

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Exploited in the last 30 days

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.

CVSS: 9.8 CRITICAL (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-502
Known exploited: Added to CISA KEV Feb 10, 2022; federal remediation due Aug 10, 2022Apply updates per vendor instructions.
EPSS (exploitation in the next 30 days): 98.33% (percentile 100)
Assigned by: mitre
NVD analysis: Analyzed
Record last updated: Oct 21, 2025
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

jenkins jenkins jenkins:jenkins	through 2.138.3; through 2.153	NVD
redhat openshift_container_platform redhat:openshift_container_platform	3.11	NVD

References

References

https://jenkins.io/security/advisory/2018-12-05/#SECURITY-595	x-refsource-confirm, vendor-advisory
https://access.redhat.com/errata/RHBA-2019:0024	vendor-advisory, x-refsource-redhat, third-party-advisory
http://www.securityfocus.com/bid/106176	vdb-entry, x-refsource-bid, broken-link
http://packetstormsecurity.com/files/166778/Jenkins-Remote-Code-Execution.html	x-refsource-misc, third-party-advisory, vdb-entry
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-1000861	us-government-resource

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.