{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-89087 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2026-89087 is a high-severity vulnerability in OCaml cstruct, published on 10 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-89087 and fix it if it is affected.\n\nWhat it is: CVE-2026-89087 is a high-severity vulnerability in OCaml cstruct, published on 10 Sep 2026. 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-2026-89087 in the wild and no public exploit code.\n\nAffected product: OCaml cstruct. 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-2026-89087/ (Markdown: https://insights.sbomify.com/CVE-2026-89087/index.md)","id":"CVE-2026-89087","markdown":"https://insights.sbomify.com/CVE-2026-89087/index.md","name":"CVE-2026-89087","record":{"aliases":["DEBIAN-CVE-2026-89087","GHSA-32j6-362j-46jc","OSEC-2026-20","UBUNTU-CVE-2026-89087"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["other"],"network_reachable":"yes","non_default_config":false,"product_category":"OCaml cstruct library","requires_auth":"none","summary":"The cstruct library for OCaml mishandles indexes, potentially leading to undefined behavior or crashes when processing malformed data.","user_interaction":"not_required","vuln_class":"other"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[],"cvss":{"score":7.3,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","version":"3.1"},"cwes":[{"id":"CWE-573","name":"Improper Following of Specification by Caller"}],"description":"The cstruct package before 6.3.0 for OCaml mishandles indexes.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Other in cstruct","id":"CVE-2026-89087","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"other","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Parted: parted: denial of service via heap buffer overflow during fat16 resize","id":"CVE-2026-89088"},"packages":[],"prev":{"headline":"Security feature bypass in jose","id":"CVE-2026-89086"},"products":["cstruct"],"published":"2026-09-10","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"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":"partial"},"state":"PUBLISHED","updated":"2026-09-14","vendors":["OCaml"]},"summary":"The cstruct library for OCaml mishandles indexes, potentially leading to undefined behavior or crashes when processing malformed data.","url":"https://insights.sbomify.com/CVE-2026-89087/"}