{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-84661 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-84661 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-84661 is a medium-severity missing authorization vulnerability in Jenkins Pipeline: Build Step Plugin, published on 2 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-84661 and fix it if it is affected.\n\nWhat it is: CVE-2026-84661 is a medium-severity missing authorization vulnerability in Jenkins Pipeline: Build Step Plugin, published on 2 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-84661 in the wild and no public exploit code.\n\nAffected product: Jenkins Pipeline: Build Step Plugin. No package-level version data is available, so check the vendor advisory linked from the reference page.\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-2026-84661/ (Markdown: https://insights.sbomify.com/CVE-2026-84661/index.md)","id":"CVE-2026-84661","markdown":"https://insights.sbomify.com/CVE-2026-84661/index.md","name":"CVE-2026-84661","record":{"aliases":["GHSA-w3m3-g5p2-2prv"],"analysis":{"component_type":"cms_plugin","fix_type":"upgrade","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Jenkins pipeline plugin","requires_auth":"low_privilege","summary":"Attackers can cancel downstream Jenkins builds without Item/Cancel permission when using the propagateAbort parameter in the Build Step Plugin.","user_interaction":"not_required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"jenkins","cpe":[],"cvss":{"score":5.4,"severity":"medium","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L","version":"3.1"},"cwes":[{"id":"CWE-862","name":"Missing Authorization"}],"description":"A missing permission check in Jenkins Pipeline: Build Step Plugin 599.v4b_67ea_11b_152 and earlier causes downstream builds awaited by the `waitForBuild` step when the `propagateAbort` parameter is used to be canceled even when the build's authentication lacks Item/Cancel permission on the downstream job.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":null,"headline":"Missing authorization in Jenkins Pipeline: Build Step Plugin","id":"CVE-2026-84661","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"missing_authorization","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Server-side request forgery in Jenkins LDAP Plugin","id":"CVE-2026-84662"},"packages":[],"prev":{"headline":"Missing authorization in Jenkins Pipeline: Build Step Plugin","id":"CVE-2026-84660"},"products":["Jenkins Pipeline: Build Step Plugin"],"published":"2026-09-02","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-09-02","vendors":["Jenkins Project"]},"summary":"Attackers can cancel downstream Jenkins builds without Item/Cancel permission when using the propagateAbort parameter in the Build Step Plugin.","url":"https://insights.sbomify.com/CVE-2026-84661/"}