{"answers":{"affected":"3 open source packages ship an affected version, including mlflow.","exploited":"There is no known exploitation of CVE-2026-2635 in the wild and no public exploit code.","fix":"Upgrade mlflow to 3.8.0rc0 or later.","what":"CVE-2026-2635 is a critical vulnerability in MLflow, published on 20 Feb 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-2635 and fix it if it is affected.\n\nWhat it is: CVE-2026-2635 is a critical vulnerability in MLflow, published on 20 Feb 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-2635 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- mlflow (PyPI): affected all versions; fixed in 3.8.0rc0\n- mlflow (PyPI): affected all versions; fixed in 3.8.0rc0\n- mlflow (PyPI): affected all versions; fixed in 3.8.0rc0\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-2026-2635/ (Markdown: https://insights.sbomify.com/CVE-2026-2635/index.md)","id":"CVE-2026-2635","markdown":"https://insights.sbomify.com/CVE-2026-2635/index.md","name":"CVE-2026-2635","record":{"aliases":["GHSA-gq3w-7jj3-x7gr","PYSEC-2026-421"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["privilege_escalation","code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"MLflow server","requires_auth":"none","summary":"Remote attackers can bypass authentication using hard-coded default credentials in MLflow to execute arbitrary code as administrator.","user_interaction":"not_required","vuln_class":"hardcoded_credentials"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"zdi","cpe":[],"cvss":{"score":9.8,"severity":"critical","source":"cna","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.0"},"cwes":[{"id":"CWE-798","name":"Use of Hard-coded Credentials"},{"id":"CWE-1393","name":"Use of Default Password"}],"description":"MLflow Use of Default Password Authentication Bypass Vulnerability. This vulnerability allows remote attackers to bypass authentication on affected installations of MLflow. Authentication is not required to exploit this vulnerability.\n\nThe specific flaw exists within the basic_auth.ini file. The file contains hard-coded default credentials. An attacker can leverage this vulnerability to bypass authentication and execute arbitrary code in the context of the administrator. Was ZDI-CAN-28256.","ecosystems":["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":"MLflow Use of Default Password Authentication Bypass Vulnerability","id":"CVE-2026-2635","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"PyPI","product":null,"products":[],"type":"hardcoded_credentials","year":"2026"},"n_packages":3,"n_references":2,"next":{"headline":"Denial of Service in Microsoft OS","id":"CVE-2026-2636"},"packages":[{"ecosystem":"PyPI","fixed":["3.8.0rc0"],"introduced":["0"],"last_affected":[],"package":"mlflow","purl":null,"source":"GHSA-gq3w-7jj3-x7gr"},{"ecosystem":"PyPI","fixed":["3.8.0rc0"],"introduced":["0"],"last_affected":[],"package":"mlflow","purl":"pkg:pypi/mlflow","source":"GHSA-gq3w-7jj3-x7gr"},{"ecosystem":"PyPI","fixed":["3.8.0rc0"],"introduced":["0"],"last_affected":[],"package":"mlflow","purl":"pkg:pypi/mlflow","source":"PYSEC-2026-421"}],"prev":{"headline":"Spoofed web content presented under trusted domains using scripted navigation on Firefox iOS","id":"CVE-2026-2634"},"products":["MLflow"],"published":"2026-02-20","related":[],"sources":[{"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":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-07-15","vendors":["MLflow"]},"summary":"Remote attackers can bypass authentication using hard-coded default credentials in MLflow to execute arbitrary code as administrator.","url":"https://insights.sbomify.com/CVE-2026-2635/"}