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CVE-2018-1000861 is a remote code execution vulnerability in the Stapler web framework used by Jenkins. It affects Jenkins weekly releases 2.153 and earlier and LTS releases 2.138.3 and earlier. The flaw is located in the Stapler component's handling of web requests, including logic in MetaClass.java, and allows crafted HTTP request URLs to reach and invoke methods on Java objects that were not intended to be externally accessible through the web interface. This unintended method invocation can be leveraged to execute attacker-controlled code in the Jenkins context.
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1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos.
This repository contains a Metasploit module (jenkins_metaprogramming.rb) that exploits multiple vulnerabilities in Jenkins (CVE-2018-1000861, CVE-2019-1003000, CVE-2019-1003001, CVE-2019-1003002, CVE-2019-1003005, CVE-2019-1003029) to achieve unauthenticated remote code execution (RCE) by bypassing the Overall/Read ACL and leveraging Groovy metaprogramming. The exploit targets Jenkins version 2.137 and below, specifically when the Pipeline: Groovy Plugin 2.61 is installed. It provides two main attack vectors: (1) Unix In-Memory, which executes arbitrary shell commands in memory, and (2) Java Dropper, which delivers and executes a malicious JAR file via Groovy's @Grab annotation. The module is highly weaponized, allowing the attacker to select payloads (reverse shell, Meterpreter, etc.) and automatically handles the delivery and execution of the payload. The main endpoints targeted are Jenkins HTTP API routes related to user search and Groovy script compilation. The code is structured as a typical Metasploit module, with clear separation of check, exploit, and payload delivery logic.
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
7 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Jenkins vulnerability included among WatchBog’s exploit modules for spreading and remote code execution.
A Jenkins remote code execution vulnerability that the Rocke Group malware uses to execute code on vulnerable Jenkins instances.
A Jenkins remote code execution vulnerability listed among the exploits used by Sysrv.
A remote code execution vulnerability in Jenkins explicitly listed as used by Sysrv.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.