{"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-2026-33865 exists.","fix":"Upgrade mlflow to a fixed version for your release line: 3.11.1 or 3.11.0rc0.","what":"CVE-2026-33865 is a medium-severity cross-site scripting vulnerability in Lfprojects Mlflow, published on 7 Apr 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-33865 and fix it if it is affected.\n\nWhat it is: CVE-2026-33865 is a medium-severity cross-site scripting vulnerability in Lfprojects Mlflow, published on 7 Apr 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-33865 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 3.11.1\n- mlflow (PyPI): affected all versions; fixed in 3.11.1\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-2026-33865/ (Markdown: https://insights.sbomify.com/CVE-2026-33865/index.md)","id":"CVE-2026-33865","markdown":"https://insights.sbomify.com/CVE-2026-33865/index.md","name":"CVE-2026-33865","record":{"aliases":["BIT-mlflow-2026-33865","GHSA-fh64-r2vc-xvhr","PYSEC-2026-93"],"analysis":{"component_type":"web_application","fix_type":"patch","impacts":["account_takeover","data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"MLflow machine learning platform","requires_auth":"low_privilege","summary":"An authenticated attacker can inject malicious scripts via YAML artifacts, leading to session hijacking or unauthorized actions when victims view the content.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"CERT-PL","cpe":[{"product":"mlflow","vendor":"lfprojects"}],"cvss":{"score":5.1,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:L/SI:L/SA:N","version":"4.0"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"MLflow is vulnerable to Stored Cross-Site Scripting (XSS) caused by unsafe parsing of YAML-based MLmodel artifacts in its web interface. An authenticated attacker can upload a malicious MLmodel file containing a payload that executes when another user views the artifact in the UI. This allows actions such as session hijacking or performing operations on behalf of the victim. \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":"Stored XSS via unsafe YAML parsing in MLflow","id":"CVE-2026-33865","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Bitnami","product":"lfprojects:mlflow","products":["lfprojects:mlflow"],"type":"xss","year":"2026"},"n_packages":4,"n_references":3,"next":{"headline":"Authorization Bypass in MLflow AJAX Endpoint","id":"CVE-2026-33866"},"packages":[{"ecosystem":"Bitnami","fixed":["3.11.1"],"introduced":["0"],"last_affected":[],"package":"mlflow","purl":"pkg:bitnami/mlflow","source":"BIT-mlflow-2026-33865"},{"ecosystem":"PyPI","fixed":["3.11.0rc0"],"introduced":["0"],"last_affected":[],"package":"mlflow","purl":"pkg:pypi/mlflow","source":"PYSEC-2026-93"},{"ecosystem":"PyPI","fixed":["3.11.1"],"introduced":["0"],"last_affected":[],"package":"mlflow","purl":null,"source":"GHSA-fh64-r2vc-xvhr"},{"ecosystem":"PyPI","fixed":["3.11.1"],"introduced":["0"],"last_affected":[],"package":"mlflow","purl":"pkg:pypi/mlflow","source":"GHSA-fh64-r2vc-xvhr"}],"prev":{"headline":"Cross-site scripting in Teamcenter V2312","id":"CVE-2026-33862"},"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":"no","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-04-14","vendors":["Mlflow"]},"summary":"An authenticated attacker can inject malicious scripts via YAML artifacts, leading to session hijacking or unauthorized actions when victims view the content.","url":"https://insights.sbomify.com/CVE-2026-33865/"}