{"answers":{"affected":"1 open source package ship an affected version, including uwebsockets.","exploited":"There is no known exploitation of OSV-2020-2221 in the wild and no public exploit code.","fix":"No fix has been published for OSV-2020-2221 yet. Limit exposure of the affected software until one is available.","what":"OSV-2020-2221 is a memory corruption vulnerability in uwebsockets, published on 4 Dec 2020. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for OSV-2020-2221 and fix it if it is affected.\n\nWhat it is: OSV-2020-2221 is a memory corruption vulnerability in uwebsockets, published on 4 Dec 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of OSV-2020-2221 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- uwebsockets (OSS-Fuzz): affected all versions; no fix listed\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/OSV-2020-2221/ (Markdown: https://insights.sbomify.com/OSV-2020-2221/index.md)","id":"OSV-2020-2221","markdown":"https://insights.sbomify.com/OSV-2020-2221/index.md","name":"OSV-2020-2221","record":{"aliases":[],"analysis":{"component_type":"library","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"uWebSockets library","requires_auth":"none","summary":"An unknown read vulnerability in the uWebSockets HTTP parser can cause a crash, leading to denial of service for applications using the library.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=28216\n\n```\nCrash type: UNKNOWN READ\nCrash state:\nstd::__1::pair\u003cunsigned int, void*\u003e uWS::HttpParser::fenceAndConsumePostPadded\u003c0\nuWS::HttpParser::consumePostPadded\nstd::__1::__function::__func\u003cLLVMFuzzerTestOneInput::$_0, std::__1::allocator\u003cLL\n```","ecosystems":["OSS-Fuzz"],"exploits":{"exploitdb":null,"first_seen":null,"github_poc":null,"max_poc_stars":null,"metasploit":null,"nuclei":null,"refs":[],"tier":null},"has_fix":false,"headline":"UNKNOWN READ in std::__1::pair\u003cunsigned int, void*\u003e uWS::HttpParser::fenceAndConsumePostPadded\u003c0","id":"OSV-2020-2221","indexable":true,"kev":null,"kind":"advisory","links":{"ecosystem":"OSS-Fuzz","product":null,"products":[],"type":"memory_corruption","year":"2020"},"n_packages":1,"n_references":null,"packages":[{"ecosystem":"OSS-Fuzz","fixed":[],"introduced":[],"last_affected":[],"package":"uwebsockets","purl":"pkg:generic/uwebsockets","source":"OSV-2020-2221"}],"products":null,"published":"2020-12-04","related":[],"sources":[{"class":"attribution","licence":"CC BY 4.0","name":"OSS-Fuzz","prefix":"OSV"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":null,"updated":null,"vendors":null},"summary":"An unknown read vulnerability in the uWebSockets HTTP parser can cause a crash, leading to denial of service for applications using the library.","url":"https://insights.sbomify.com/OSV-2020-2221/"}