{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-84427 exists.","fix":"No fix has been published for CVE-2026-84427 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-84427 is a medium-severity denial of service vulnerability in zhayujie CowAgent, 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-2026-84427 and fix it if it is affected.\n\nWhat it is: CVE-2026-84427 is a medium-severity denial of service vulnerability in zhayujie CowAgent, published on 2 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-84427 exists.\n\nAffected product: zhayujie CowAgent. 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-2026-84427/ (Markdown: https://insights.sbomify.com/CVE-2026-84427/index.md)","id":"CVE-2026-84427","markdown":"https://insights.sbomify.com/CVE-2026-84427/index.md","name":"CVE-2026-84427","record":{"aliases":["GHSA-wh78-4m24-7957"],"analysis":{"component_type":"library","fix_type":"no_fix_stated","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Python agent library","requires_auth":"low_privilege","summary":"Remote attackers can cause a denial of service in CowAgent via the Bash Tool component, requiring permissions to exploit.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulDB","cpe":[],"cvss":{"score":5.3,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P","version":"4.0"},"cwes":[{"id":"CWE-404","name":"Improper Resource Shutdown or Release"}],"description":"A vulnerability was determined in zhayujie CowAgent up to 2.1.7. Affected is an unknown function of the file agent/tools/bash/bash.py of the component Bash Tool. Executing a manipulation can lead to denial of service. The attack can be launched remotely. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":null,"headline":"zhayujie CowAgent Bash Tool bash.py denial of service","id":"CVE-2026-84427","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":0,"n_references":5,"next":{"headline":"fastify vulnerable to header validation bypass via incomplete schema case normalization","id":"CVE-2026-84428"},"packages":[],"prev":{"headline":"zhayujie CowAgent Browser Tool browser_tool.py BrowserTool denial of service","id":"CVE-2026-84425"},"products":["CowAgent"],"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":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-09-04","vendors":["zhayujie"]},"summary":"Remote attackers can cause a denial of service in CowAgent via the Bash Tool component, requiring permissions to exploit.","url":"https://insights.sbomify.com/CVE-2026-84427/"}