CVE-2018-1000861
Jenkins Stapler Web Framework Deserialization of Untrusted Data Vulnerability
IN CISA KEV
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.
- Vendor
- Jenkins
- Product
- Jenkins Stapler Web Framework
- CVSS 3.1
- 9.8 (critical), scored by NVD (primary)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CVSS 3.1
- 9.8 (critical), scored by 134c704f-9b21-4f2e-91b3-4a467353bcc0CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CWE
- CWE-502
- Published
- 2018-12-10
- NVD modified
- 2026-06-17
- NVD status
- Analyzed
CISA KEV
- Date added
- 2022-02-10
- Due date
- 2022-08-10
- Ransomware use
- Unknown
- Required action
- Apply updates per vendor instructions.
EPSS
98.3% chance of exploitation in the next 30 days (percentile 99th)
FIRST EPSS, updated 17 Oct 2026. About EPSS
CVSS is severity, EPSS is likelihood, KEV means already exploited. EPSS is a statistical probability, not a certainty: a low score does not make a bug safe, and a high one does not prove it is being exploited.
References
- packetstormsecurity.com (Third Party Advisory, VDB Entry)
- www.securityfocus.com (Broken Link)
- access.redhat.com (Third Party Advisory)
- jenkins.io (Vendor Advisory)
- packetstormsecurity.com (Third Party Advisory, VDB Entry)
- www.securityfocus.com (Broken Link)
- access.redhat.com (Third Party Advisory)
- jenkins.io (Vendor Advisory)
- www.cisa.gov (US Government Resource)
Data last updated 18 Oct 2026. Sources: NVD API 2.0, CISA KEV catalog, FIRST EPSS. Links: NVD, CISA KEV. Metadata only. ThreatWire does not host exploit code.