{"answers":{"affected":"4 open source packages ship an affected version, including org.jenkins-ci.main:jenkins-core. It affects 2 products.","exploited":"Yes. Attackers have exploited CVE-2018-1000861 in the wild since at least 10 Feb 2022.","fix":"Upgrade org.jenkins-ci.main:jenkins-core to a fixed version for your release line: 2.138.4 or 2.154. US federal agencies must fix it by 10 Aug 2022.","what":"CVE-2018-1000861 is a critical code injection vulnerability in Jenkins Jenkins, published on 10 Dec 2018. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2018-1000861 and fix it if it is affected.\n\nWhat it is: CVE-2018-1000861 is a critical code injection vulnerability in Jenkins Jenkins, published on 10 Dec 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: Yes. Attackers have exploited CVE-2018-1000861 in the wild since at least 10 Feb 2022.\n\nAffected packages and fixed versions:\n- org.jenkins-ci.main:jenkins-core (Maven): affected all versions; fixed in 2.138.4\n- org.jenkins-ci.main:jenkins-core (Maven): affected all versions; fixed in 2.138.4\n- org.jenkins-ci.main:jenkins-core (Maven): affected from 2.140; fixed in 2.154\n- org.jenkins-ci.main:jenkins-core (Maven): affected from 2.140; fixed in 2.154\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2018-1000861/ (Markdown: https://insights.sbomify.com/CVE-2018-1000861/index.md)","id":"CVE-2018-1000861","markdown":"https://insights.sbomify.com/CVE-2018-1000861/index.md","name":"CVE-2018-1000861","record":{"aliases":["GHSA-hhpm-5cp2-hg4x"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Jenkins CI server","requires_auth":"none","summary":"Attackers can execute arbitrary code on Jenkins servers by crafting malicious URLs that exploit the Stapler web framework.","user_interaction":"not_required","vuln_class":"code_injection"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"jenkins","vendor":"jenkins"},{"product":"openshift_container_platform","vendor":"redhat"}],"cvss":{"score":9.8,"severity":"critical","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-502","name":"Deserialization of Untrusted Data"}],"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.","ecosystems":["Maven"],"exploits":{"exploitdb":0,"first_seen":"2019-01-08","github_poc":3,"max_poc_stars":4,"metasploit":1,"nuclei":1,"refs":[{"date":"2019-04-24T23:52:42Z","kind":"github_poc","ref":"https://github.com/1NTheKut/CVE-2019-1003000_RCE-DETECTION","stars":4,"title":"A C# module  to detect if a Jenkins server is vulnerable to the RCE vulnerability found in CVE-2019-1003000 (chained with  CVE-2018-1000861 for pre-auth RCE)"},{"date":"2019-01-08","kind":"metasploit","ref":"exploit/multi/http/jenkins_metaprogramming","stars":null,"title":"Jenkins ACL Bypass and Metaprogramming RCE"},{"date":"2023-09-13T18:52:33Z","kind":"github_poc","ref":"https://github.com/smokeintheshell/CVE-2018-1000861","stars":0,"title":"CVE-2018-1000861 Exploit"},{"date":"2026-10-08T06:56:55Z","kind":"github_poc","ref":"https://github.com/CyberCTF/vulhub-jenkins-cve-2018-1000861","stars":0,"title":"Vulhub jenkins/CVE-2018-1000861: Jenkins Stapler unauthenticated RCE, run with Isoloom"},{"date":null,"kind":"nuclei","ref":"http/cves/2018/CVE-2018-1000861.yaml","stars":null,"title":"Jenkins - Remote Command Injection"}],"tier":"exploited"},"has_fix":true,"headline":"Jenkins Stapler Web Framework Deserialization of Untrusted Data","id":"CVE-2018-1000861","indexable":true,"kev":{"dateAdded":"2022-02-10","dueDate":"2022-08-10","knownRansomwareCampaignUse":"Unknown","product":"Jenkins Stapler Web Framework","requiredAction":"Apply updates per vendor instructions.","vendorProject":"Jenkins","vulnerabilityName":"Jenkins Stapler Web Framework Deserialization of Untrusted Data Vulnerability"},"kind":"cve","links":{"ecosystem":"Maven","product":"jenkins:jenkins","products":["jenkins:jenkins","redhat:openshift_container_platform"],"type":"code_injection","year":"2018"},"n_packages":4,"n_references":4,"next":{"headline":"Exposure of Sensitive Information to an Unauthorized Actor in Jenkins","id":"CVE-2018-1000862"},"packages":[{"ecosystem":"Maven","fixed":["2.138.4"],"introduced":["0"],"last_affected":[],"package":"org.jenkins-ci.main:jenkins-core","purl":null,"source":"GHSA-hhpm-5cp2-hg4x"},{"ecosystem":"Maven","fixed":["2.138.4"],"introduced":["0"],"last_affected":[],"package":"org.jenkins-ci.main:jenkins-core","purl":"pkg:maven/org.jenkins-ci.main/jenkins-core","source":"GHSA-hhpm-5cp2-hg4x"},{"ecosystem":"Maven","fixed":["2.154"],"introduced":["2.140"],"last_affected":[],"package":"org.jenkins-ci.main:jenkins-core","purl":null,"source":"GHSA-hhpm-5cp2-hg4x"},{"ecosystem":"Maven","fixed":["2.154"],"introduced":["2.140"],"last_affected":[],"package":"org.jenkins-ci.main:jenkins-core","purl":"pkg:maven/org.jenkins-ci.main/jenkins-core","source":"GHSA-hhpm-5cp2-hg4x"}],"prev":{"headline":"Cross-site scripting in n/a","id":"CVE-2018-1000860"},"products":["n/a"],"published":"2018-12-10","related":[{"cvss_score":9.8,"headline":"Jenkins Command Line Interface (CLI) Path Traversal","id":"CVE-2024-23897","kev_date_added":"2024-08-19","published":"2024-01-24"},{"cvss_score":9.8,"headline":"Jenkins Remote Code Execution","id":"CVE-2017-1000353","kev_date_added":"2025-10-02","published":"2018-01-29"},{"cvss_score":7.5,"headline":"Jenkins User Interface (UI) Information Disclosure","id":"CVE-2015-5317","kev_date_added":"2023-05-12","published":"2015-11-25"},{"cvss_score":9.8,"headline":"Multiple vulnerabilities allow bypassing path filtering of agent-to-controller access control in Jenkins","id":"CVE-2021-21690","kev_date_added":null,"published":"2021-11-04"},{"cvss_score":9.8,"headline":"Multiple vulnerabilities allow bypassing path filtering of agent-to-controller access control in Jenkins","id":"CVE-2021-21691","kev_date_added":null,"published":"2021-11-04"},{"cvss_score":9.8,"headline":"Multiple vulnerabilities allow bypassing path filtering of agent-to-controller access control in Jenkins","id":"CVE-2021-21692","kev_date_added":null,"published":"2021-11-04"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"open","licence":"CC0 1.0","name":"CISA KEV"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"},{"class":"attribution","licence":"BSD-3-Clause","name":"Metasploit"},{"class":"attribution","licence":"MIT","name":"Nuclei templates"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":"yes","exploitation":"active","technical_impact":"total"},"state":"PUBLISHED","updated":"2025-10-21","vendors":["n/a"]},"summary":"Attackers can execute arbitrary code on Jenkins servers by crafting malicious URLs that exploit the Stapler web framework.","url":"https://insights.sbomify.com/CVE-2018-1000861/"}