{"answers":{"affected":"2 open source packages ship an affected version, including vm2.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-100722 exists.","fix":"Upgrade vm2 to 3.12.2 or later.","what":"CVE-2026-100722 is a high-severity denial of service vulnerability in patriksimek vm2, published on 27 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-100722 and fix it if it is affected.\n\nWhat it is: CVE-2026-100722 is a high-severity denial of service vulnerability in patriksimek vm2, published on 27 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-100722 exists.\n\nAffected packages and fixed versions:\n- vm2 (npm): affected all versions; fixed in 3.12.2\n- vm2 (npm): affected all versions; fixed in 3.12.2\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-2026-100722/ (Markdown: https://insights.sbomify.com/CVE-2026-100722/index.md)","id":"CVE-2026-100722","markdown":"https://insights.sbomify.com/CVE-2026-100722/index.md","name":"CVE-2026-100722","record":{"aliases":["CLEANSTART-2026-QS01923","ECHO-7042-16e3-9cca","GHSA-2v2p-6j97-cjg9","MINI-jxmr-7jr9-jj3g","ROOT-APP-NPM-CVE-2026-100722"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"JavaScript sandbox library","requires_auth":"none","summary":"An attacker can crash the host process by triggering an unhandled promise rejection via the construct trap in the vm2 sandbox.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":8.9,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H","version":"4.0"},"cwes":[{"id":"CWE-248","name":"Uncaught Exception"}],"description":"vm2 before 3.12.2 does not apply host-side Promise rejection handling in the sandbox-to-host construct trap. In BaseHandler, the apply trap calls markHostPromiseHandled() on the returned value, but the adjacent construct path returns the result of Reflect.construct without the same sanitization. If an embedder exposes a constructable host function whose constructor returns a native rejected Promise, an untrusted script executed via VM.run can invoke it with `new` and ignore the result; the rejected host Promise crosses the bridge unhandled and, under Node's strict unhandled-rejection policy, is promoted to an uncaught exception that terminates the host process.","ecosystems":["npm"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"vm2 before 3.12.2 Host Process Termination via Construct Trap","id":"CVE-2026-100722","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":2,"n_references":2,"next":{"headline":"vm2 before 3.12.2 Memory Disclosure via zlib Buffer Pool","id":"CVE-2026-100723"},"packages":[{"ecosystem":"npm","fixed":["3.12.2"],"introduced":["0"],"last_affected":[],"package":"vm2","purl":null,"source":"GHSA-2v2p-6j97-cjg9"},{"ecosystem":"npm","fixed":["3.12.2"],"introduced":["0"],"last_affected":[],"package":"vm2","purl":"pkg:npm/vm2","source":"GHSA-2v2p-6j97-cjg9"}],"prev":{"headline":"vm2 before 3.12.2 Authorization Bypass via Custom Resolver","id":"CVE-2026-100721"},"products":["vm2"],"published":"2026-09-27","related":[],"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":"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":"2026-09-28","vendors":["patriksimek"]},"summary":"An attacker can crash the host process by triggering an unhandled promise rejection via the construct trap in the vm2 sandbox.","url":"https://insights.sbomify.com/CVE-2026-100722/"}