{"answers":{"affected":"1 open source package ship an affected version, including hermes.","exploited":"There is no known exploitation of OSV-2020-893 in the wild and no public exploit code.","fix":"No fix has been published for OSV-2020-893 yet. Limit exposure of the affected software until one is available.","what":"OSV-2020-893 is a memory corruption vulnerability in hermes, published on 21 Jul 2020."},"fix_prompt":"Check this codebase for OSV-2020-893 and fix it if it is affected.\n\nWhat it is: OSV-2020-893 is a memory corruption vulnerability in hermes, published on 21 Jul 2020. \nExploitation: There is no known exploitation of OSV-2020-893 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- hermes (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-2020-893/ (Markdown: https://insights.sbomify.com/OSV-2020-893/index.md)","id":"OSV-2020-893","markdown":"https://insights.sbomify.com/OSV-2020-893/index.md","name":"OSV-2020-893","record":{"aliases":[],"analysis":{"component_type":"library","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"unknown","non_default_config":false,"product_category":"Hermes JavaScript engine","requires_auth":"none","summary":"A heap-buffer-overflow in the Hermes JavaScript engine's lexer can cause a crash when processing malformed Unicode escape sequences.","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=23725\n\n```\nCrash type: Heap-buffer-overflow READ 1\nCrash state:\nhermes::parser::JSLexer::consumeBracedCodePoint\nhermes::parser::JSLexer::consumeUnicodeEscape\nhermes::parser::JSLexer::advance\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-buffer-overflow in hermes::parser::JSLexer::consumeBracedCodePoint","id":"OSV-2020-893","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":"hermes","purl":"pkg:generic/hermes","source":"OSV-2020-893"}],"products":null,"published":"2020-07-21","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-buffer-overflow in the Hermes JavaScript engine's lexer can cause a crash when processing malformed Unicode escape sequences.","url":"https://insights.sbomify.com/OSV-2020-893/"}