{"answers":{"affected":"4 open source packages ship an affected version, including mlflow. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-33866 exists.","fix":"Upgrade mlflow to a fixed version for your release line: 3.11.1 or 3.11.0rc0.","what":"CVE-2026-33866 is a medium-severity missing authorization vulnerability in Lfprojects Mlflow, published on 7 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-33866 and fix it if it is affected.\n\nWhat it is: CVE-2026-33866 is a medium-severity missing authorization vulnerability in Lfprojects Mlflow, published on 7 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-33866 exists.\n\nAffected packages and fixed versions:\n- mlflow (Bitnami): affected all versions; fixed in 3.11.1\n- mlflow (PyPI): affected all versions; fixed in 3.11.0rc0\n- mlflow (PyPI): affected all versions; fixed in 3.11.0rc0\n- mlflow (PyPI): affected all versions; fixed in 3.11.0rc0\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-2026-33866/ (Markdown: https://insights.sbomify.com/CVE-2026-33866/index.md)","id":"CVE-2026-33866","markdown":"https://insights.sbomify.com/CVE-2026-33866/index.md","name":"CVE-2026-33866","record":{"aliases":["BIT-mlflow-2026-33866","GHSA-46r5-x6jq-v8g6","PYSEC-2026-94"],"analysis":{"component_type":"library","fix_type":"patch","impacts":["data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"MLflow machine learning library","requires_auth":"low_privilege","summary":"Attackers can bypass authorization checks to download unauthorized model artifacts from MLflow experiments via a vulnerable AJAX endpoint.","user_interaction":"not_required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"CERT-PL","cpe":[{"product":"mlflow","vendor":"lfprojects"}],"cvss":{"score":5.3,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-862","name":"Missing Authorization"}],"description":"MLflow is vulnerable to an authorization bypass affecting the AJAX endpoint used to download saved model artifacts. Due to missing access‑control validation, a user without permissions to a given experiment can directly query this endpoint and retrieve model artifacts they are not authorized to access.\n\n \nThis issue affects MLflow version through 3.10.1","ecosystems":["Bitnami","PyPI"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"Authorization Bypass in MLflow AJAX Endpoint","id":"CVE-2026-33866","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Bitnami","product":"lfprojects:mlflow","products":["lfprojects:mlflow"],"type":"missing_authorization","year":"2026"},"n_packages":4,"n_references":3,"next":{"headline":"AVideo has Plaintext Video Password Storage","id":"CVE-2026-33867"},"packages":[{"ecosystem":"Bitnami","fixed":["3.11.1"],"introduced":["0"],"last_affected":[],"package":"mlflow","purl":"pkg:bitnami/mlflow","source":"BIT-mlflow-2026-33866"},{"ecosystem":"PyPI","fixed":["3.11.0rc0"],"introduced":["0"],"last_affected":[],"package":"mlflow","purl":null,"source":"GHSA-46r5-x6jq-v8g6"},{"ecosystem":"PyPI","fixed":["3.11.0rc0"],"introduced":["0"],"last_affected":[],"package":"mlflow","purl":"pkg:pypi/mlflow","source":"GHSA-46r5-x6jq-v8g6"},{"ecosystem":"PyPI","fixed":["3.11.0rc0"],"introduced":["0"],"last_affected":[],"package":"mlflow","purl":"pkg:pypi/mlflow","source":"PYSEC-2026-94"}],"prev":{"headline":"Stored XSS via unsafe YAML parsing in MLflow","id":"CVE-2026-33865"},"products":["Mlflow"],"published":"2026-04-07","related":[{"cvss_score":9.3,"headline":"MLflow Server-Side Request Forgery","id":"CVE-2026-64849","kev_date_added":"2026-08-19","published":"2026-08-17"},{"cvss_score":10,"headline":"Command Injection in mlflow/mlflow","id":"CVE-2025-15379","kev_date_added":null,"published":"2026-03-30"},{"cvss_score":10,"headline":"Remote Code Execution due to Full Controlled File Write in mlflow/mlflow","id":"CVE-2024-0520","kev_date_added":null,"published":"2024-06-06"},{"cvss_score":10,"headline":"Path Traversal: '\\..\\filename'","id":"CVE-2023-6977","kev_date_added":null,"published":"2023-12-20"},{"cvss_score":10,"headline":"Improper Neutralization of Special Elements Used in a Template Engine in mlflow/mlflow","id":"CVE-2023-6709","kev_date_added":null,"published":"2023-12-12"},{"cvss_score":10,"headline":"MLflow Arbitrary File Upload","id":"CVE-2023-6015","kev_date_added":null,"published":"2023-11-16"},{"cvss_score":10,"headline":"MLflow Arbitrary File Write","id":"CVE-2023-6018","kev_date_added":null,"published":"2023-11-16"}],"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":"yes","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-04-14","vendors":["Mlflow"]},"summary":"Attackers can bypass authorization checks to download unauthorized model artifacts from MLflow experiments via a vulnerable AJAX endpoint.","url":"https://insights.sbomify.com/CVE-2026-33866/"}