{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2023-23556 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2023-23556 yet. Limit exposure of the affected software until one is available.","what":"CVE-2023-23556 is a critical memory corruption vulnerability in Facebook Hermes, published on 18 May 2023. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2023-23556 and fix it if it is affected.\n\nWhat it is: CVE-2023-23556 is a critical memory corruption vulnerability in Facebook Hermes, published on 18 May 2023. 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-2023-23556 in the wild and no public exploit code.\n\nAffected product: Facebook Hermes. No package-level version data is available, so check the vendor advisory linked from the reference page.\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-2023-23556/ (Markdown: https://insights.sbomify.com/CVE-2023-23556/index.md)","id":"CVE-2023-23556","markdown":"https://insights.sbomify.com/CVE-2023-23556/index.md","name":"CVE-2023-23556","record":{"aliases":["GHSA-5wwx-r37w-hqhw"],"analysis":{"component_type":"library","fix_type":"patch","impacts":["code_execution"],"network_reachable":"yes","non_default_config":true,"product_category":"JavaScript engine","requires_auth":"none","summary":"A memory corruption vulnerability in the Hermes JavaScript engine allows arbitrary code execution when processing untrusted JavaScript.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"facebook","cpe":[{"product":"hermes","vendor":"facebook"}],"cvss":{"score":9.8,"severity":"critical","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-787","name":"Out-of-bounds Write"}],"description":"An error in BigInt conversion to Number in Hermes prior to commit a6dcafe6ded8e61658b40f5699878cd19a481f80 could have been used by a malicious attacker to execute arbitrary code due to an out-of-bound write. Note that this bug is only exploitable in cases where Hermes is used to execute untrusted JavaScript. Hence, most React Native applications are not affected.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"Memory corruption in Hermes","id":"CVE-2023-23556","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"memory_corruption","year":"2023"},"n_packages":0,"n_references":2,"next":{"headline":"Memory corruption in Hermes","id":"CVE-2023-23557"},"packages":[],"prev":{"headline":"BIG-IP Virtual Edition vulnerability","id":"CVE-2023-23555"},"products":["Hermes"],"published":"2023-05-18","related":[{"cvss_score":9.8,"headline":"Memory corruption in Hermes","id":"CVE-2023-23557","kev_date_added":null,"published":"2023-05-18"},{"cvss_score":9.8,"headline":"Memory corruption in Hermes","id":"CVE-2023-25933","kev_date_added":null,"published":"2023-05-18"},{"cvss_score":9.8,"headline":"Use after free in Hermes","id":"CVE-2023-28081","kev_date_added":null,"published":"2023-05-18"},{"cvss_score":9.8,"headline":"Use after free in Hermes","id":"CVE-2023-30470","kev_date_added":null,"published":"2023-05-18"},{"cvss_score":9.8,"headline":"Memory corruption in Hermes","id":"CVE-2022-32234","kev_date_added":null,"published":"2022-10-11"},{"cvss_score":9.8,"headline":"Integer overflow in Hermes","id":"CVE-2022-35289","kev_date_added":null,"published":"2022-10-11"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"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":"yes","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2025-01-31","vendors":["Facebook"]},"summary":"A memory corruption vulnerability in the Hermes JavaScript engine allows arbitrary code execution when processing untrusted JavaScript.","url":"https://insights.sbomify.com/CVE-2023-23556/"}