CVE-2018-1000861

CRITICAL9.8

CISA KEV

Published 2018-12-10 · Updated 2026-06-17 · Source cve@mitre.org

Summary

CVE-2018-1000861 is a critical-severity (CVSS 9.8) vulnerability in Jenkins Jenkins Stapler Web Framework. CISA added it to the Known Exploited Vulnerabilities catalog on February 10, 2022, which means exploitation in the wild has been confirmed; US federal agencies had to remediate it by August 10, 2022. CISA does not currently list it as used in ransomware campaigns. Jenkins has 6 vulnerabilities in the KEV catalog, 1 of them linked to ransomware.

All 6 known-exploited Jenkins vulnerabilities →

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.

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE-502CWE-502

CISA Known-Exploited Vulnerability

Product: Jenkins — Jenkins Stapler Web Framework

Name: Jenkins Stapler Web Framework Deserialization of Untrusted Data Vulnerability

Date added: 2022-02-10 · Due: 2022-08-10

Required action: Apply updates per vendor instructions.

References

View on NVD

More exploited Jenkins vulnerabilities

Most recently added to CISA KEV

CVE-2017-1000353
Jenkins — Jenkins Remote Code Execution Vulnerability
added 2025-10-02
CVE-2024-23897
RANSOMWARE
Jenkins Command Line Interface (CLI) — Jenkins Command Line Interface (CLI) Path Traversal Vulnerability
added 2024-08-19
CVE-2015-5317
Jenkins User Interface (UI) — Jenkins User Interface (UI) Information Disclosure Vulnerability
added 2023-05-12
CVE-2019-1003029
Script Security Plugin — Jenkins Script Security Plugin Sandbox Bypass Vulnerability
added 2022-04-25
CVE-2019-1003030
Matrix Project Plugin — Jenkins Matrix Project Plugin Remote Code Execution Vulnerability
added 2022-03-25

View all →

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