CVE-2018-1000861
Critical 9.8 Exploited in the wild (KEV)
Confirmed active exploitation — CISA KEV catalog
- Name
- Jenkins Stapler Web Framework Deserialization of Untrusted Data Vulnerability
- Added to catalog
- Remediation due date (US federal)
- Required action
- Apply updates per vendor instructions.
Description
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.
Metrics
- CVSS 3.1
-
9.8 (CRITICAL)
Score source: NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 98% (percentile: 100) as of 1 November 2026
- CWE
- CWE-502
Affected products
jenkins: jenkins; redhat: openshift container platform
References
- https://jenkins.io/security/advisory/2018-12-05/#SECURITY-595 Vendor Advisory
- https://jenkins.io/security/advisory/2018-12-05/#SECURITY-595 Vendor Advisory
- http://packetstormsecurity.com/files/166778/Jenkins-Remote-Code-Execution.html Third Party AdvisoryVDB Entry
- http://www.securityfocus.com/bid/106176 Broken Link
- https://access.redhat.com/errata/RHBA-2019:0024 Third Party Advisory
- http://packetstormsecurity.com/files/166778/Jenkins-Remote-Code-Execution.html Third Party AdvisoryVDB Entry
- http://www.securityfocus.com/bid/106176 Broken Link
- https://access.redhat.com/errata/RHBA-2019:0024 Third Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018… US Government Resource