{"answers":{"affected":"4 open source packages ship an affected version, including org.jenkins-ci.main:jenkins-core. It affects 1 product.","exploited":"There is no known exploitation of CVE-2018-1000409 in the wild and no public exploit code.","fix":"Upgrade org.jenkins-ci.main:jenkins-core to a fixed version for your release line: 2.138.2 or 2.146.","what":"CVE-2018-1000409 is a medium-severity authentication bypass vulnerability in Jenkins Jenkins, published on 9 Jan 2019. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2018-1000409 and fix it if it is affected.\n\nWhat it is: CVE-2018-1000409 is a medium-severity authentication bypass vulnerability in Jenkins Jenkins, published on 9 Jan 2019. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2018-1000409 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- org.jenkins-ci.main:jenkins-core (Maven): affected all versions; fixed in 2.138.2\n- org.jenkins-ci.main:jenkins-core (Maven): affected all versions; fixed in 2.138.2\n- org.jenkins-ci.main:jenkins-core (Maven): affected from 2.140; fixed in 2.146\n- org.jenkins-ci.main:jenkins-core (Maven): affected from 2.140; fixed in 2.146\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-2018-1000409/ (Markdown: https://insights.sbomify.com/CVE-2018-1000409/index.md)","id":"CVE-2018-1000409","markdown":"https://insights.sbomify.com/CVE-2018-1000409/index.md","name":"CVE-2018-1000409","record":{"aliases":["GHSA-rr6r-p7rw-369c"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["account_takeover"],"network_reachable":"yes","non_default_config":false,"product_category":"Jenkins CI server","requires_auth":"none","summary":"Attackers can hijack user sessions during account creation in Jenkins, potentially leading to unauthorized access to user accounts.","user_interaction":"required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"jenkins","vendor":"jenkins"}],"cvss":{"score":5.4,"severity":"medium","source":"nvd","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N","version":"3.0"},"cwes":[{"id":"CWE-384","name":"Session Fixation"}],"description":"A session fixation vulnerability exists in Jenkins 2.145 and earlier, LTS 2.138.1 and earlier in core/src/main/java/hudson/security/HudsonPrivateSecurityRealm.java that prevented Jenkins from invalidating the existing session and creating a new one when a user signed up for a new user account.","ecosystems":["Maven"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Session Fixation in Jenkins","id":"CVE-2018-1000409","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Maven","product":"jenkins:jenkins","products":["jenkins:jenkins"],"type":"auth_bypass","year":"2018"},"n_packages":4,"n_references":2,"next":{"headline":"Exposure of Sensitive Information to an Unauthorized Actor in Jenkins","id":"CVE-2018-1000410"},"packages":[{"ecosystem":"Maven","fixed":["2.138.2"],"introduced":["0"],"last_affected":[],"package":"org.jenkins-ci.main:jenkins-core","purl":null,"source":"GHSA-rr6r-p7rw-369c"},{"ecosystem":"Maven","fixed":["2.138.2"],"introduced":["0"],"last_affected":[],"package":"org.jenkins-ci.main:jenkins-core","purl":"pkg:maven/org.jenkins-ci.main/jenkins-core","source":"GHSA-rr6r-p7rw-369c"},{"ecosystem":"Maven","fixed":["2.146"],"introduced":["2.140"],"last_affected":[],"package":"org.jenkins-ci.main:jenkins-core","purl":null,"source":"GHSA-rr6r-p7rw-369c"},{"ecosystem":"Maven","fixed":["2.146"],"introduced":["2.140"],"last_affected":[],"package":"org.jenkins-ci.main:jenkins-core","purl":"pkg:maven/org.jenkins-ci.main/jenkins-core","source":"GHSA-rr6r-p7rw-369c"}],"prev":{"headline":"Improper Authorization in Jenkins","id":"CVE-2018-1000408"},"products":["n/a"],"published":"2019-01-09","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 Stapler Web Framework Deserialization of Untrusted Data","id":"CVE-2018-1000861","kev_date_added":"2022-02-10","published":"2018-12-10"},{"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":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-05","vendors":["n/a"]},"summary":"Attackers can hijack user sessions during account creation in Jenkins, potentially leading to unauthorized access to user accounts.","url":"https://insights.sbomify.com/CVE-2018-1000409/"}