{"answers":{"affected":"1 open source package ship an affected version, including quickjs.","exploited":"There is no known exploitation of OSV-2025-835 in the wild and no public exploit code.","fix":"No fix has been published for OSV-2025-835 yet. Limit exposure of the affected software until one is available.","what":"OSV-2025-835 is an use after free vulnerability in quickjs, published on 14 Oct 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for OSV-2025-835 and fix it if it is affected.\n\nWhat it is: OSV-2025-835 is an use after free vulnerability in quickjs, published on 14 Oct 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of OSV-2025-835 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- quickjs (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-2025-835/ (Markdown: https://insights.sbomify.com/OSV-2025-835/index.md)","id":"OSV-2025-835","markdown":"https://insights.sbomify.com/OSV-2025-835/index.md","name":"OSV-2025-835","record":{"aliases":[],"analysis":{"component_type":"library","fix_type":"patch","impacts":["code_execution","denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"JavaScript engine library","requires_auth":"none","summary":"A heap-use-after-free in JS_DefineProperty allows attackers to execute arbitrary code or cause denial of service via crafted JavaScript.","user_interaction":"required","vuln_class":"use_after_free"},"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=451334094\n\n```\nCrash type: Heap-use-after-free READ 8\nCrash state:\nJS_DefineProperty\nbuild_backtrace\nJS_CallInternal\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":"Heap-use-after-free in JS_DefineProperty","id":"OSV-2025-835","indexable":true,"kev":null,"kind":"advisory","links":{"ecosystem":"OSS-Fuzz","product":null,"products":[],"type":"use_after_free","year":"2025"},"n_packages":1,"n_references":null,"packages":[{"ecosystem":"OSS-Fuzz","fixed":[],"introduced":[],"last_affected":[],"package":"quickjs","purl":"pkg:generic/quickjs","source":"OSV-2025-835"}],"products":null,"published":"2025-10-14","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":"A heap-use-after-free in JS_DefineProperty allows attackers to execute arbitrary code or cause denial of service via crafted JavaScript.","url":"https://insights.sbomify.com/OSV-2025-835/"}