{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-40947 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-40947 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-40947 is a low-severity vulnerability in Yubico libfido2, published on 15 Apr 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-2026-40947 and fix it if it is affected.\n\nWhat it is: CVE-2026-40947 is a low-severity vulnerability in Yubico libfido2, published on 15 Apr 2026. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-40947 in the wild and no public exploit code.\n\nAffected product: Yubico libfido2. 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-2026-40947/ (Markdown: https://insights.sbomify.com/CVE-2026-40947/index.md)","id":"CVE-2026-40947","markdown":"https://insights.sbomify.com/CVE-2026-40947/index.md","name":"CVE-2026-40947","record":{"aliases":["GHSA-6vgr-gf7r-f3jc"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"FIDO2 authentication libraries","requires_auth":"none","summary":"An attacker can execute arbitrary code via DLL hijacking due to an unintended search path in Yubico FIDO2 libraries.","user_interaction":"not_required","vuln_class":"other"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[],"cvss":{"score":2.9,"severity":"low","source":"cna","vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-426","name":"Untrusted Search Path"}],"description":"Yubico libfido2 before 1.17.0, python-fido2 before 2.2.0, and yubikey-manager before 5.9.1 have an unintended DLL search path.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":null,"headline":"Other in libfido2","id":"CVE-2026-40947","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"other","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Apache Airflow Providers Keycloak: OAuth Login CSRF — Missing State Parameter in Keycloak Auth Manager","id":"CVE-2026-40948"},"packages":[],"prev":{"headline":"Oxia: OIDC token audience validation bypass via SkipClientIDCheck","id":"CVE-2026-40946"},"products":["libfido2","python-fido2","yubikey-manager"],"published":"2026-04-15","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":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-04-16","vendors":["Yubico"]},"summary":"An attacker can execute arbitrary code via DLL hijacking due to an unintended search path in Yubico FIDO2 libraries.","url":"https://insights.sbomify.com/CVE-2026-40947/"}