{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-87733 exists.","fix":"Upgrade to a fixed version.","what":"CVE-2026-87733 is a medium-severity vulnerability in OCaml mirage-crypto-ec, published on 9 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-87733 and fix it if it is affected.\n\nWhat it is: CVE-2026-87733 is a medium-severity vulnerability in OCaml mirage-crypto-ec, published on 9 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-87733 exists.\n\nAffected product: OCaml mirage-crypto-ec. 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-2026-87733/ (Markdown: https://insights.sbomify.com/CVE-2026-87733/index.md)","id":"CVE-2026-87733","markdown":"https://insights.sbomify.com/CVE-2026-87733/index.md","name":"CVE-2026-87733","record":{"aliases":["DEBIAN-CVE-2026-87733","GHSA-5v5p-5xxr-9xf8","OSEC-2026-13","UBUNTU-CVE-2026-87733"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["security_bypass"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"OCaml crypto library","requires_auth":"none","summary":"Attackers can forge ECDSA signatures by using the point at infinity as a public key in mirage-crypto-ec, bypassing authentication checks.","user_interaction":"not_required","vuln_class":"other"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[],"cvss":{"score":6.2,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","version":"3.1"},"cwes":[{"id":"CWE-295","name":"Improper Certificate Validation"}],"description":"An issue was discovered in the mirage-crypto-ec function before 2.2.0 for OCaml. The ECDSA functions {P256,P384,P521}.Dsa.pub_of_octets accept 0x00, the encoding of the point at infinity, as a public key. With that public key, signatures can be forged without a private key.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"Other in mirage-crypto-ec","id":"CVE-2026-87733","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"other","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Denial of service in utcp","id":"CVE-2026-87734"},"packages":[],"prev":{"headline":"Other in mirage-crypto","id":"CVE-2026-87732"},"products":["mirage-crypto-ec"],"published":"2026-09-09","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":"no","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-09-09","vendors":["OCaml"]},"summary":"Attackers can forge ECDSA signatures by using the point at infinity as a public key in mirage-crypto-ec, bypassing authentication checks.","url":"https://insights.sbomify.com/CVE-2026-87733/"}