{"answers":{"affected":"4 open source packages ship an affected version, including engine.io. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-41940 exists.","fix":"Upgrade engine.io to a fixed version for your release line: 3.6.1 or 6.2.1.","what":"CVE-2022-41940 is a high-severity denial of service vulnerability in socketio engine.io, published on 22 Nov 2022. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2022-41940 and fix it if it is affected.\n\nWhat it is: CVE-2022-41940 is a high-severity denial of service vulnerability in socketio engine.io, published on 22 Nov 2022. 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-2022-41940 exists.\n\nAffected packages and fixed versions:\n- engine.io (npm): affected all versions; fixed in 3.6.1\n- engine.io (npm): affected all versions; fixed in 3.6.1\n- engine.io (npm): affected from 4.0.0; fixed in 6.2.1\n- engine.io (npm): affected from 4.0.0; fixed in 6.2.1\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-2022-41940/ (Markdown: https://insights.sbomify.com/CVE-2022-41940/index.md)","id":"CVE-2022-41940","markdown":"https://insights.sbomify.com/CVE-2022-41940/index.md","name":"CVE-2022-41940","record":{"aliases":["AZL-44820","GHSA-r7qp-cfhv-p84w","ROOT-APP-NPM-CVE-2022-41940"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Node.js communication library","requires_auth":"low_privilege","summary":"A specially crafted HTTP request causes an uncaught exception in Engine.IO, crashing the Node.js process and denying service to users.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"engine.io","vendor":"socket"}],"cvss":{"score":7.1,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:H","version":"3.1"},"cwes":[{"id":"CWE-248","name":"Uncaught Exception"}],"description":"Engine.IO is the implementation of transport-based cross-browser/cross-device bi-directional communication layer for Socket.IO. A specially crafted HTTP request can trigger an uncaught exception on the Engine.IO server, thus killing the Node.js process. This impacts all the users of the engine.io package, including those who uses depending packages like socket.io. There is no known workaround except upgrading to a safe version. There are patches for this issue released in versions 3.6.1 and 6.2.1.","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":"Uncaught exception in engine.io","id":"CVE-2022-41940","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":"denial_of_service","year":"2022"},"n_packages":4,"n_references":3,"next":{"headline":"glpi contains XSS Stored inside Standard Interface Help Link href attribute","id":"CVE-2022-41941"},"packages":[{"ecosystem":"npm","fixed":["3.6.1"],"introduced":["0"],"last_affected":[],"package":"engine.io","purl":null,"source":"GHSA-r7qp-cfhv-p84w"},{"ecosystem":"npm","fixed":["3.6.1"],"introduced":["0"],"last_affected":[],"package":"engine.io","purl":"pkg:npm/engine.io","source":"GHSA-r7qp-cfhv-p84w"},{"ecosystem":"npm","fixed":["6.2.1"],"introduced":["4.0.0"],"last_affected":[],"package":"engine.io","purl":null,"source":"GHSA-r7qp-cfhv-p84w"},{"ecosystem":"npm","fixed":["6.2.1"],"introduced":["4.0.0"],"last_affected":[],"package":"engine.io","purl":"pkg:npm/engine.io","source":"GHSA-r7qp-cfhv-p84w"}],"prev":{"headline":"Credential exposure when running third-party builders in knative/func","id":"CVE-2022-41939"},"products":["engine.io"],"published":"2022-11-22","related":[{"cvss_score":7.5,"headline":"Socket.IO: Engine.IO WebTransport SID DoS","id":"CVE-2026-59724","kev_date_added":null,"published":"2026-07-08"},{"cvss_score":7.5,"headline":"Socket.IO: Engine.IO Polling Transport Connection Exhaustion","id":"CVE-2026-59725","kev_date_added":null,"published":"2026-07-08"},{"cvss_score":7.5,"headline":"Uncaught Exception in engine.io","id":"CVE-2022-21676","kev_date_added":null,"published":"2022-01-12"},{"cvss_score":7.5,"headline":"Resource exhaustion in engine.io","id":"CVE-2020-36048","kev_date_added":null,"published":"2021-01-07"},{"cvss_score":6.5,"headline":"Uncaught exception in engine.io","id":"CVE-2023-31125","kev_date_added":null,"published":"2023-05-08"}],"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":"no","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2025-04-22","vendors":["socketio"]},"summary":"A specially crafted HTTP request causes an uncaught exception in Engine.IO, crashing the Node.js process and denying service to users.","url":"https://insights.sbomify.com/CVE-2022-41940/"}