{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-86466 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2026-86466 is a high-severity authentication bypass vulnerability in Apache Airflow FAB provider, published on 16 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-86466 and fix it if it is affected.\n\nWhat it is: CVE-2026-86466 is a high-severity authentication bypass vulnerability in Apache Airflow FAB provider, published on 16 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-86466 in the wild and no public exploit code.\n\nAffected product: Apache Airflow FAB provider. 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-2026-86466/ (Markdown: https://insights.sbomify.com/CVE-2026-86466/index.md)","id":"CVE-2026-86466","markdown":"https://insights.sbomify.com/CVE-2026-86466/index.md","name":"CVE-2026-86466","record":{"aliases":["CLEANSTART-2026-RR24550","GHSA-6fx3-rxq6-j8w2"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["account_takeover"],"network_reachable":"yes","non_default_config":true,"product_category":"Apache Airflow FAB provider","requires_auth":"low_privilege","summary":"Attackers can authenticate to Apache Airflow using valid tokens from other applications on the same Authentik instance due to missing issuer and audience validation.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"apache","cpe":[{"product":"apache-airflow-providers-fab","vendor":"apache"}],"cvss":{"score":8.1,"severity":"high","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","version":"3.1"},"cwes":[{"id":"CWE-346","name":"Origin Validation Error"}],"description":"Apache Airflow FAB provider: the Authentik OAuth path in the FAB auth manager does not validate the issuer or audience claims of the id_token it accepts. An attacker holding a token that the same Authentik identity provider minted for a different client application can present it to Airflow and be authenticated as the user it names, because the audience claim is never checked. Affects deployments using the FAB auth manager with Authentik OAuth where the same Authentik instance also serves other applications; the attacker needs a valid token for any of those other applications, not for Airflow.\n\nCVE-2026-75156 corrected the same missing validation on the Azure AD path in this file; the Authentik path was left unchanged and is fixed here. Deployments that applied the CVE-2026-75156 fix and use Authentik must also upgrade for this one.\n\nUsers of apache-airflow-providers-fab are recommended to upgrade to version 3.9.0 or later, which fixes the issue.","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":"Apache Airflow FAB provider: FAB Authentik provider: id_token issuer/audience not validated","id":"CVE-2026-86466","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"auth_bypass","year":"2026"},"n_packages":0,"n_references":4,"next":{"headline":"Apache Airflow Amazon provider: AWS auth manager: SAML login CSRF logs users into the attacker's account","id":"CVE-2026-86467"},"packages":[],"prev":{"headline":"Apache Airflow Akeyless provider: Akeyless secrets backend: team-scope guard bypass via user-controlled key","id":"CVE-2026-86465"},"products":["Apache Airflow FAB provider"],"published":"2026-09-16","related":[{"cvss_score":9.8,"headline":"Security feature bypass in Apache Airflow FAB provider","id":"CVE-2026-82311","kev_date_added":null,"published":"2026-09-16"},{"cvss_score":9.8,"headline":"Auth bypass in Apache Airflow FAB provider","id":"CVE-2026-59243","kev_date_added":null,"published":"2026-07-29"},{"cvss_score":9.8,"headline":"Apache Airflow Providers FAB: FAB provider 1.2.1 and 1.2.0 did not let user to logout for Airflow","id":"CVE-2024-42447","kev_date_added":null,"published":"2024-08-05"},{"cvss_score":9.1,"headline":"Apache Airflow FAB provider: FAB Admin password PATCH does not invalidate database-backed sessions","id":"CVE-2026-86462","kev_date_added":null,"published":"2026-09-16"},{"cvss_score":9.1,"headline":"Auth bypass in Apache Airflow FAB provider","id":"CVE-2026-75156","kev_date_added":null,"published":"2026-09-08"},{"cvss_score":8.1,"headline":"Privilege escalation in Apache Airflow FAB provider","id":"CVE-2026-59245","kev_date_added":null,"published":"2026-07-13"}],"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":"no","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-09-17","vendors":["Apache Software Foundation"]},"summary":"Attackers can authenticate to Apache Airflow using valid tokens from other applications on the same Authentik instance due to missing issuer and audience validation.","url":"https://insights.sbomify.com/CVE-2026-86466/"}