{"id":"CVE-2018-1000861","published":"2018-12-10T14:29:01Z","modified":"2026-06-17T01:33:11Z","title":"Jenkins Stapler Web Framework Deserialization of Untrusted Data Vulnerability","vendor":"Jenkins","product":"Jenkins Stapler Web Framework","tier":"core","eol":null,"description":{"text":"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.","provenance":"source","from":"NVD"},"summary":{"text":"The flaw is a code execution vulnerability in the Stapler web framework used by Jenkins, located in the MetaClass component (stapler/core/src/main/java/org/kohsuke/stapler/MetaClass.java). An attacker who can reach the Jenkins web interface over the network and send crafted URLs, with no authentication or user interaction required, can invoke methods on Java objects that were not intended to be callable this way.","provenance":"ai","model":"claude-haiku-5-5","generatedAt":"2026-10-23T07:09:41Z"},"cvss":{"score":9.8,"severity":"CRITICAL","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","provenance":"source","from":"NVD"},"epss":{"score":0.98326,"percentile":0.99917,"date":"2026-10-28","provenance":"source"},"kev":{"dateAdded":"2022-02-10","dueDate":"2022-08-10","ransomware":false,"requiredAction":"Apply updates per vendor instructions.","notes":"https://nvd.nist.gov/vuln/detail/CVE-2018-1000861","provenance":"source"},"vulncheckKev":{"dateAdded":"2020-06-24","exploitedFirstSeen":"2020-06-24","ransomware":true,"evidence":[{"url":"https://unit42.paloaltonetworks.com/lucifer-new-cryptojacking-and-ddos-hybrid-malware/","date":"2020-06-24"},{"url":"https://research.checkpoint.com/2020/rudeminer-blacksquid-and-lucifer-walk-into-a-bar/","date":"2020-09-15"},{"url":"https://cujo.com/the-sysrv-botnet-and-how-it-evolved/","date":"2021-09-22"},{"url":"https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json","date":"2022-02-10"},{"url":"https://www.botconf.eu/wp-content/uploads/2022/05/Botconf2022-24-PalotayZsigovits.pdf","date":"2022-04-27"},{"url":"https://www.ivanti.com/resources/v/doc/pr-survey-report/ransomware-quarterly-indexreport_q2-q3","date":"2022-10-21"},{"url":"https://1665891.fs1.hubspotusercontent-na1.net/hubfs/1665891/Threat%20reports/AquaSecurity_Kinsing_Demystified_Technical_Guide.pdf","date":"2024-05-10"},{"url":"https://dashboard.shadowserver.org/statistics/honeypot/vulnerability/map/?day=2024-10-17&host_type=src&vulnerability=cve-2018-1000861","date":"2024-10-17"},{"url":"https://dashboard.shadowserver.org/statistics/honeypot/vulnerability/map/?day=2024-12-18&host_type=src&vulnerability=cve-2018-1000861","date":"2024-12-18"},{"url":"https://dashboard.shadowserver.org/statistics/honeypot/vulnerability/map/?day=2025-03-09&host_type=src&vulnerability=cve-2018-1000861","date":"2025-03-09"}],"evidenceTotal":91,"provenance":"source"},"exploited":true,"otx":{"pulseCount":50,"pulses":[{"name":"Actively_Exploited_Kev | Oct 29, 2026","url":"https://otx.alienvault.com/pulse/6ae20c1db17e7057ae7d9ad1","created":"2026-10-28"},{"name":"Actively_Exploited_Kev | Oct 28, 2026","url":"https://otx.alienvault.com/pulse/6ae0ba7e0e2a97ff7b218819","created":"2026-10-27"},{"name":"Actively_Exploited_Kev | Oct 27, 2026","url":"https://otx.alienvault.com/pulse/6adf68b85c3e852f3c111d18","created":"2026-10-26"},{"name":"Actively_Exploited_Kev | Oct 24, 2026","url":"https://otx.alienvault.com/pulse/6adb740e397c3ad4799aa4cd","created":"2026-10-23"},{"name":"Actively_Exploited_Kev | Oct 23, 2026","url":"https://otx.alienvault.com/pulse/6ada236fcfba2dfa730ea482","created":"2026-10-22"},{"name":"Actively_Exploited_Kev | Oct 22, 2026","url":"https://otx.alienvault.com/pulse/6ad8d33a077cbb5cab524d80","created":"2026-10-21"},{"name":"Actively_Exploited_Kev | Oct 21, 2026","url":"https://otx.alienvault.com/pulse/6ad78130c4d1ac2be83a8b6d","created":"2026-10-20"},{"name":"Actively_Exploited_Kev | Oct 20, 2026","url":"https://otx.alienvault.com/pulse/6ad62f63c24a405a3423cc13","created":"2026-10-19"},{"name":"Actively_Exploited_Kev | Oct 19, 2026","url":"https://otx.alienvault.com/pulse/6ad4dda174e5797d0bd238b7","created":"2026-10-18"},{"name":"Actively_Exploited_Kev | Oct 18, 2026","url":"https://otx.alienvault.com/pulse/6ad38c22e1848f8189d1c121","created":"2026-10-17"}],"provenance":"machine"},"cwes":[{"id":"CWE-502","name":"Deserialization of Untrusted Data"}],"references":[{"url":"http://packetstormsecurity.com/files/166778/Jenkins-Remote-Code-Execution.html","tags":["Third Party Advisory","VDB Entry"]},{"url":"http://www.securityfocus.com/bid/106176","tags":["Broken Link"]},{"url":"https://access.redhat.com/errata/RHBA-2019:0024","tags":["Third Party Advisory"]},{"url":"https://jenkins.io/security/advisory/2018-12-05/#SECURITY-595","tags":["Vendor Advisory"]},{"url":"http://packetstormsecurity.com/files/166778/Jenkins-Remote-Code-Execution.html","tags":["Third Party Advisory","VDB Entry"]},{"url":"http://www.securityfocus.com/bid/106176","tags":["Broken Link"]},{"url":"https://access.redhat.com/errata/RHBA-2019:0024","tags":["Third Party Advisory"]},{"url":"https://jenkins.io/security/advisory/2018-12-05/#SECURITY-595","tags":["Vendor Advisory"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-1000861","tags":["US Government Resource"]}],"techniques":[{"id":"T1190","name":"Exploit Public-Facing Application","tactics":["initial-access"],"provenance":"source","basis":"ctid-cve","bases":["ctid-cve","ai-mapping"],"basisDetail":"CTID attack_to_cve (Phase 1); claude-haiku-5-5: Crafted URLs sent to public-facing web app","mappingType":"uncategorized","evidence":[{"from":"description","quote":"allows attackers to invoke some methods on Java objects by accessing crafted URLs","start":196,"end":277}],"confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"},{"id":"T1059","name":"Command and Scripting Interpreter","tactics":["execution"],"provenance":"ai","basis":"ai-mapping","bases":["ai-mapping"],"basisDetail":"claude-haiku-5-5: Yields arbitrary code execution","mappingType":"primary_impact","evidence":[{"from":"description","quote":"A code execution vulnerability exists in the Stapler web framework","start":0,"end":66}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"}],"reports":[],"affected":[{"ecosystem":"Maven","package":"org.jenkins-ci.main:jenkins-core","vulnerableRanges":["<2.138.4",">=2.140, <2.154"],"patched":["2.138.4","2.154"],"from":["GHSA-hhpm-5cp2-hg4x"],"provenance":"source"}],"advisories":[{"id":"GHSA-hhpm-5cp2-hg4x","url":"https://github.com/advisories/GHSA-hhpm-5cp2-hg4x","severity":"CRITICAL","ecosystem":"Maven","package":"org.jenkins-ci.main:jenkins-core","vulnerableRanges":["<2.138.4"],"patched":["2.138.4"],"provenance":"source","from":"GHSA"},{"id":"GHSA-hhpm-5cp2-hg4x","url":"https://github.com/advisories/GHSA-hhpm-5cp2-hg4x","severity":"CRITICAL","ecosystem":"Maven","package":"org.jenkins-ci.main:jenkins-core","vulnerableRanges":[">=2.140, <2.154"],"patched":["2.154"],"provenance":"source","from":"GHSA"}],"euvd":{"id":"EUVD-2022-4161","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2022-4161","exploited":true,"exploitedSince":"2022-02-10","provenance":"source"},"exploits":[],"exploitSources":{"pocGithub":{"count":3,"skipped":0,"earliest":"2019-04-24","earliestUrl":"https://github.com/1NTheKut/CVE-2019-1003000_RCE-DETECTION","repos":[{"name":"1NTheKut/CVE-2019-1003000_RCE-DETECTION","url":"https://github.com/1NTheKut/CVE-2019-1003000_RCE-DETECTION","stars":4,"created":"2019-04-24"},{"name":"smokeintheshell/CVE-2018-1000861","url":"https://github.com/smokeintheshell/CVE-2018-1000861","stars":0,"created":"2023-09-13"},{"name":"CyberCTF/vulhub-jenkins-cve-2018-1000861","url":"https://github.com/CyberCTF/vulhub-jenkins-cve-2018-1000861","stars":0,"created":"2026-10-08"}]},"metasploit":[{"name":"Jenkins ACL Bypass and Metaprogramming RCE","module":"exploit/multi/http/jenkins_metaprogramming","type":"exploit","disclosureDate":"2019-01-08","url":"https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/multi/http/jenkins_metaprogramming.rb"}],"nuclei":[{"id":"CVE-2018-1000861","name":"Jenkins - Remote Command Injection","severity":"critical","path":"http/cves/2018/CVE-2018-1000861.yaml","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2018/CVE-2018-1000861.yaml"}],"first":{"date":"2019-01-08","source":"Metasploit","url":"https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/multi/http/jenkins_metaprogramming.rb"},"provenance":"source"},"exploitRefs":["http://packetstormsecurity.com/files/166778/Jenkins-Remote-Code-Execution.html"],"flow":[{"stage":"primary","techniques":["T1059"],"provenance":"ai"},{"stage":"related","techniques":["T1190"],"provenance":"source"}],"timeline":[{"date":"2018-12-10","kind":"published","label":"Published (NVD)","url":"https://nvd.nist.gov/vuln/detail/CVE-2018-1000861","provenance":"source"},{"date":"2019-01-08","kind":"exploit-public","label":"First public exploit: Metasploit; later: PoC-in-GitHub 2019-04-24","url":"https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/multi/http/jenkins_metaprogramming.rb","provenance":"source"},{"date":"2020-06-24","kind":"exploited-reported","label":"Exploitation first reported (VulnCheck KEV evidence)","url":"https://unit42.paloaltonetworks.com/lucifer-new-cryptojacking-and-ddos-hybrid-malware/","provenance":"source"},{"date":"2022-02-10","kind":"kev","label":"Added to CISA KEV","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","provenance":"source"},{"date":"2022-02-10","kind":"euvd-exploited","label":"ENISA EUVD: exploited","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2022-4161","provenance":"source"}],"speed":{"daysToPublicExploit":29,"firstExploitFrom":"Metasploit","daysToKev":1158},"priority":{"score":79.8,"factors":[{"name":"In a KEV catalog","points":35.0,"detail":"listed in CISA KEV and VulnCheck KEV"},{"name":"Recent KEV listing","points":0.0,"detail":"added 2318 days ago"},{"name":"Known ransomware use","points":10.0,"detail":"CISA KEV and VulnCheck KEV: Known"},{"name":"EPSS percentile","points":19.98,"detail":"percentile 0.9992"},{"name":"Named in threat reports","points":0.0,"detail":"0 reports"},{"name":"Public exploit code","points":5.0,"detail":"1 NVD exploit link; 3 PoC-in-GitHub repos; 1 Metasploit module; 1 nuclei template"},{"name":"Mentioned in OTX pulses","points":3.0,"detail":"50 pulses"},{"name":"CVSS severity","points":6.86,"detail":"base score 9.8"},{"name":"End-of-life product","points":0.0,"detail":"supported or unknown"}]}}