{"answers":{"affected":"2 open source packages ship an affected version, including modern-async. It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-41167 in the wild and no public exploit code.","fix":"Upgrade modern-async to 1.0.4 or later.","what":"CVE-2021-41167 is a high-severity denial of service vulnerability in nicolas-van modern-async, published on 20 Oct 2021. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-41167 and fix it if it is affected.\n\nWhat it is: CVE-2021-41167 is a high-severity denial of service vulnerability in nicolas-van modern-async, published on 20 Oct 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2021-41167 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- modern-async (npm): affected all versions; fixed in 1.0.4\n- modern-async (npm): affected all versions; fixed in 1.0.4\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-2021-41167/ (Markdown: https://insights.sbomify.com/CVE-2021-41167/index.md)","id":"CVE-2021-41167","markdown":"https://insights.sbomify.com/CVE-2021-41167/index.md","name":"CVE-2021-41167","record":{"aliases":["GHSA-3pcq-34w5-p4g2"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"JavaScript async library","requires_auth":"none","summary":"The modern-async library fails to limit concurrency in forEachSeries and forEachLimit, potentially causing resource exhaustion and denial of service.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"modern-async","vendor":"modern-async_project"}],"cvss":{"score":7.5,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-770","name":"Allocation of Resources Without Limits or Throttling"},{"id":"CWE-400","name":"Uncontrolled Resource Consumption"}],"description":"modern-async is an open source JavaScript tooling library for asynchronous operations using async/await and promises. In affected versions a bug affecting two of the functions in this library: forEachSeries and forEachLimit. They should limit the concurrency of some actions but, in practice, they don't. Any code calling these functions will be written thinking they would limit the concurrency but they won't. This could lead to potential security issues in other projects. The problem has been patched in 1.0.4. There is no workaround.","ecosystems":["npm"],"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":"Unlimited requests in modern-async","id":"CVE-2021-41167","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":"denial_of_service","year":"2021"},"n_packages":2,"n_references":3,"next":{"headline":"Hash-Collision Denial-of-Service Vulnerability in snudown","id":"CVE-2021-41168"},"packages":[{"ecosystem":"npm","fixed":["1.0.4"],"introduced":["0"],"last_affected":[],"package":"modern-async","purl":null,"source":"GHSA-3pcq-34w5-p4g2"},{"ecosystem":"npm","fixed":["1.0.4"],"introduced":["0"],"last_affected":[],"package":"modern-async","purl":"pkg:npm/modern-async","source":"GHSA-3pcq-34w5-p4g2"}],"prev":{"headline":"Permission bypass in Nextcloud Android App","id":"CVE-2021-41166"},"products":["modern-async"],"published":"2021-10-20","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":"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":"2024-08-04","vendors":["nicolas-van"]},"summary":"The modern-async library fails to limit concurrency in forEachSeries and forEachLimit, potentially causing resource exhaustion and denial of service.","url":"https://insights.sbomify.com/CVE-2021-41167/"}