{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-87732 exists.","fix":"Upgrade to a fixed version.","what":"CVE-2026-87732 is a medium-severity vulnerability in OCaml mirage-crypto, 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-2026-87732 and fix it if it is affected.\n\nWhat it is: CVE-2026-87732 is a medium-severity vulnerability in OCaml mirage-crypto, 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-2026-87732 exists.\n\nAffected product: OCaml mirage-crypto. 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-2026-87732/ (Markdown: https://insights.sbomify.com/CVE-2026-87732/index.md)","id":"CVE-2026-87732","markdown":"https://insights.sbomify.com/CVE-2026-87732/index.md","name":"CVE-2026-87732","record":{"aliases":["DEBIAN-CVE-2026-87732","GHSA-vqxm-cgmv-2pcr","OSEC-2026-12","UBUNTU-CVE-2026-87732"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["data_read"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"OCaml crypto library","requires_auth":"none","summary":"Attackers can read decrypted plaintext from a buffer even when authentication tags are forged, bypassing integrity checks in the mirage-crypto library.","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-347","name":"Improper Verification of Cryptographic Signature"}],"description":"An issue was discovered in the mirage-crypto package before 2.2.0 for OCaml. The AES.GCM.authenticate_decrypt_into and Chacha20.authenticate_decrypt_into functions write the decrypted plaintext into a caller-provided buffer and only then compares the tag. On a forged tag, the functions returns false, but the destination buffer already holds the full plaintext.","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","id":"CVE-2026-87732","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"other","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Other in mirage-crypto-ec","id":"CVE-2026-87733"},"packages":[],"prev":{"headline":"this is rejected","id":"CVE-2026-87730"},"products":["mirage-crypto"],"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 read decrypted plaintext from a buffer even when authentication tags are forged, bypassing integrity checks in the mirage-crypto library.","url":"https://insights.sbomify.com/CVE-2026-87732/"}