{"answers":{"affected":"5 open source packages ship an affected version, including org.jenkins-ci.main:jenkins-core and jenkins. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-2103 exists.","fix":"Upgrade org.jenkins-ci.main:jenkins-core to a fixed version for your release line: 2.204.2 or 2.219.","what":"CVE-2020-2103 is a medium-severity vulnerability in Jenkins Jenkins, published on 29 Jan 2020. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2020-2103 and fix it if it is affected.\n\nWhat it is: CVE-2020-2103 is a medium-severity vulnerability in Jenkins Jenkins, published on 29 Jan 2020. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-2103 exists.\n\nAffected packages and fixed versions:\n- org.jenkins-ci.main:jenkins-core (Maven): affected all versions; fixed in 2.204.2\n- org.jenkins-ci.main:jenkins-core (Maven): affected all versions; fixed in 2.204.2\n- org.jenkins-ci.main:jenkins-core (Maven): affected from 2.205; fixed in 2.219\n- org.jenkins-ci.main:jenkins-core (Maven): affected from 2.205; fixed in 2.219\n- jenkins (Bitnami): affected all versions; fixed in 2.218.1\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-2020-2103/ (Markdown: https://insights.sbomify.com/CVE-2020-2103/index.md)","id":"CVE-2020-2103","markdown":"https://insights.sbomify.com/CVE-2020-2103/index.md","name":"CVE-2020-2103","record":{"aliases":["BIT-jenkins-2020-2103","GHSA-4jjj-cm7q-v6hr"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"Jenkins automation server","requires_auth":"low_privilege","summary":"Attackers can obtain session identifiers from the whoAmI diagnostic page, potentially leading to session hijacking.","user_interaction":"required","vuln_class":"information_disclosure"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"jenkins","cpe":[{"product":"jenkins","vendor":"jenkins"}],"cvss":{"score":5.4,"severity":"medium","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-200","name":"Exposure of Sensitive Information to an Unauthorized Actor"}],"description":"Jenkins 2.218 and earlier, LTS 2.204.1 and earlier exposed session identifiers on a user's detail object in the whoAmI diagnostic page.","ecosystems":["Bitnami","Maven"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":1,"refs":[{"date":null,"kind":"nuclei","ref":"http/cves/2020/CVE-2020-2103.yaml","stars":null,"title":"Jenkins \u003c=2.218 - Information Disclosure"}],"tier":"weaponised"},"has_fix":true,"headline":"Jenkins Diagnostic page exposed session cookies","id":"CVE-2020-2103","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Bitnami","product":"jenkins:jenkins","products":["jenkins:jenkins"],"type":"information_disclosure","year":"2020"},"n_packages":5,"n_references":6,"next":{"headline":"Memory usage graphs accessible to anyone with Overall/Read","id":"CVE-2020-2104"},"packages":[{"ecosystem":"Bitnami","fixed":["2.218.1"],"introduced":["0"],"last_affected":[],"package":"jenkins","purl":"pkg:bitnami/jenkins","source":"BIT-jenkins-2020-2103"},{"ecosystem":"Maven","fixed":["2.204.2"],"introduced":["0"],"last_affected":[],"package":"org.jenkins-ci.main:jenkins-core","purl":null,"source":"GHSA-4jjj-cm7q-v6hr"},{"ecosystem":"Maven","fixed":["2.204.2"],"introduced":["0"],"last_affected":[],"package":"org.jenkins-ci.main:jenkins-core","purl":"pkg:maven/org.jenkins-ci.main/jenkins-core","source":"GHSA-4jjj-cm7q-v6hr"},{"ecosystem":"Maven","fixed":["2.219"],"introduced":["2.205"],"last_affected":[],"package":"org.jenkins-ci.main:jenkins-core","purl":null,"source":"GHSA-4jjj-cm7q-v6hr"},{"ecosystem":"Maven","fixed":["2.219"],"introduced":["2.205"],"last_affected":[],"package":"org.jenkins-ci.main:jenkins-core","purl":"pkg:maven/org.jenkins-ci.main/jenkins-core","source":"GHSA-4jjj-cm7q-v6hr"}],"prev":{"headline":"Non-constant time HMAC comparison","id":"CVE-2020-2102"},"products":["Jenkins"],"published":"2020-01-29","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":"Apache-2.0","name":"Bitnami","prefix":"BIT"},{"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)"},{"class":"attribution","licence":"MIT","name":"Nuclei templates"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-04","vendors":["Jenkins project"]},"summary":"Attackers can obtain session identifiers from the whoAmI diagnostic page, potentially leading to session hijacking.","url":"https://insights.sbomify.com/CVE-2020-2103/"}