{"answers":{"affected":"4 open source packages ship an affected version, including apache-airflow and airflow. It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-26559 in the wild and no public exploit code.","fix":"Upgrade apache-airflow to a fixed version for your release line: 2.0.1 or 2.0.1rc1.","what":"CVE-2021-26559 is a medium-severity missing authorization vulnerability in Apache Airflow, published on 17 Feb 2021. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-26559 and fix it if it is affected.\n\nWhat it is: CVE-2021-26559 is a medium-severity missing authorization vulnerability in Apache Airflow, published on 17 Feb 2021. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2021-26559 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- apache-airflow (PyPI): affected all versions; fixed in 2.0.1\n- apache-airflow (PyPI): affected from 2.0.0; fixed in 2.0.1rc1\n- apache-airflow (PyPI): affected from 2.0.0; fixed in 2.0.1rc1\n- airflow (Bitnami): affected from 2.0.0; fixed in 2.0.1\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-2021-26559/ (Markdown: https://insights.sbomify.com/CVE-2021-26559/index.md)","id":"CVE-2021-26559","markdown":"https://insights.sbomify.com/CVE-2021-26559/index.md","name":"CVE-2021-26559","record":{"aliases":["BIT-airflow-2021-26559","GHSA-ffw3-6mp6-jmvj","PYSEC-2021-2"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["data_read","privilege_escalation"],"network_reachable":"yes","non_default_config":false,"product_category":"Apache Airflow","requires_auth":"low_privilege","summary":"Attackers with Viewer or User roles can access sensitive configuration data via the Stable API, bypassing intended access controls.","user_interaction":"not_required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"apache","cpe":[{"product":"airflow","vendor":"apache"}],"cvss":{"score":6.5,"severity":"medium","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-284","name":"Improper Access Control"}],"description":"Improper Access Control on Configurations Endpoint for the Stable API of Apache Airflow allows users with Viewer or User role to get Airflow Configurations including sensitive information even when `[webserver] expose_config` is set to `False` in `airflow.cfg`. This allowed a privilege escalation attack. This issue affects Apache Airflow 2.0.0.","ecosystems":["Bitnami","PyPI"],"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":"CWE-284 Improper Access Control on Configurations Endpoint for the Stable API","id":"CVE-2021-26559","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Bitnami","product":"apache:airflow","products":["apache:airflow"],"type":"missing_authorization","year":"2021"},"n_packages":4,"n_references":3,"next":{"headline":"Information disclosure in Synology DiskStation Manager (DSM)","id":"CVE-2021-26560"},"packages":[{"ecosystem":"Bitnami","fixed":["2.0.1"],"introduced":["2.0.0"],"last_affected":[],"package":"airflow","purl":"pkg:bitnami/airflow","source":"BIT-airflow-2021-26559"},{"ecosystem":"PyPI","fixed":["2.0.1"],"introduced":["0"],"last_affected":[],"package":"apache-airflow","purl":"pkg:pypi/apache-airflow","source":"PYSEC-2021-2"},{"ecosystem":"PyPI","fixed":["2.0.1rc1"],"introduced":["2.0.0"],"last_affected":[],"package":"apache-airflow","purl":null,"source":"GHSA-ffw3-6mp6-jmvj"},{"ecosystem":"PyPI","fixed":["2.0.1rc1"],"introduced":["2.0.0"],"last_affected":[],"package":"apache-airflow","purl":"pkg:pypi/apache-airflow","source":"GHSA-ffw3-6mp6-jmvj"}],"prev":{"headline":"Deserialization of Untrusted Data","id":"CVE-2021-26558"},"products":["Apache Airflow"],"published":"2021-02-17","related":[{"cvss_score":9.8,"headline":"Apache Airflow's Experimental API Authentication Bypass","id":"CVE-2020-13927","kev_date_added":"2022-01-18","published":"2020-11-10"},{"cvss_score":8.8,"headline":"Apache Airflow Command Injection","id":"CVE-2020-11978","kev_date_added":"2022-01-18","published":"2020-07-16"},{"cvss_score":9.8,"headline":"Apache Airflow: DAG author RCE on webserver via unrestricted import_string() in BaseSerialization.deserialize()","id":"CVE-2026-33264","kev_date_added":null,"published":"2026-07-07"},{"cvss_score":9.8,"headline":"Apache Airflow: Privilege escalation using airflow logs","id":"CVE-2023-25754","kev_date_added":null,"published":"2023-05-08"},{"cvss_score":9.8,"headline":"Apache Airflow, Apache Airflow MySQL Provider: Arbitrary file read via MySQL provider in Apache Airflow","id":"CVE-2023-22884","kev_date_added":null,"published":"2023-01-21"},{"cvss_score":9.8,"headline":"Apache Airflow Pinot provider allowed Command Injection","id":"CVE-2022-38649","kev_date_added":null,"published":"2022-11-22"},{"cvss_score":9.8,"headline":"Apache Airlfow Pig Provider RCE","id":"CVE-2022-40189","kev_date_added":null,"published":"2022-11-22"}],"sources":[{"class":"attribution","licence":"Apache-2.0","name":"Bitnami","prefix":"BIT"},{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CC BY 4.0","name":"PyPA Advisory Database","prefix":"PYSEC"},{"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":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2025-02-13","vendors":["Apache Software Foundation"]},"summary":"Attackers with Viewer or User roles can access sensitive configuration data via the Stable API, bypassing intended access controls.","url":"https://insights.sbomify.com/CVE-2021-26559/"}