{"answers":{"affected":"3 open source packages ship an affected version, including mcp-pinot-server.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-49257 exists.","fix":"Upgrade mcp-pinot-server to 3.1.0 or later.","what":"CVE-2026-49257 is a critical missing authorization vulnerability in startreedata mcp-pinot, published on 18 Jun 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-2026-49257 and fix it if it is affected.\n\nWhat it is: CVE-2026-49257 is a critical missing authorization vulnerability in startreedata mcp-pinot, published on 18 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-49257 exists.\n\nAffected packages and fixed versions:\n- mcp-pinot-server (PyPI): affected all versions; fixed in 3.1.0\n- mcp-pinot-server (PyPI): affected all versions; fixed in 3.1.0\n- mcp-pinot-server (PyPI): affected all versions; fixed in 3.1.0\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-2026-49257/ (Markdown: https://insights.sbomify.com/CVE-2026-49257/index.md)","id":"CVE-2026-49257","markdown":"https://insights.sbomify.com/CVE-2026-49257/index.md","name":"CVE-2026-49257","record":{"aliases":["GHSA-73cv-556c-w3g6","PYSEC-2026-410"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["data_read","data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"MCP server library","requires_auth":"none","summary":"Unauthenticated attackers can execute SQL queries and modify schemas in Apache Pinot clusters via the mcp-pinot server due to default insecure settings.","user_interaction":"not_required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":10,"severity":"critical","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-306","name":"Missing Authentication for Critical Functionality"}],"description":"mcp-pinot is a Python-based Model Context Protocol (MCP) server for interacting with Apache Pinot. In versions 3.0.1 and below, mcp-pinot defaults to running an HTTP MCP server bound to 0.0.0.0:8080 with no authentication enabled. All MCP tools, including SQL query execution, schema creation, and table-config mutation, are reachable by any network-adjacent caller. The server proxies these calls using server-side Pinot credentials, producing a confused-deputy condition that yields full read/write access to the configured Pinot cluster. This issue has been fixed in version 3.1.0","ecosystems":["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":"mcp-pinot: Unauthenticated tool invocation via default oauth_enabled=False + host 0.0.0.0 bind","id":"CVE-2026-49257","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"PyPI","product":null,"products":[],"type":"missing_authorization","year":"2026"},"n_packages":3,"n_references":4,"next":{"headline":"Nebula Mesh: Web UI lacks ownership checks, enabling cross-operator access to hosts and networks (read, block, delete)","id":"CVE-2026-49258"},"packages":[{"ecosystem":"PyPI","fixed":["3.1.0"],"introduced":["0"],"last_affected":[],"package":"mcp-pinot-server","purl":null,"source":"GHSA-73cv-556c-w3g6"},{"ecosystem":"PyPI","fixed":["3.1.0"],"introduced":["0"],"last_affected":[],"package":"mcp-pinot-server","purl":"pkg:pypi/mcp-pinot-server","source":"GHSA-73cv-556c-w3g6"},{"ecosystem":"PyPI","fixed":["3.1.0"],"introduced":["0"],"last_affected":[],"package":"mcp-pinot-server","purl":"pkg:pypi/mcp-pinot-server","source":"PYSEC-2026-410"}],"prev":{"headline":"Discourse: Hidden tag names leaked via category serializers","id":"CVE-2026-49256"},"products":["mcp-pinot"],"published":"2026-06-18","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":"poc","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-06-22","vendors":["startreedata"]},"summary":"Unauthenticated attackers can execute SQL queries and modify schemas in Apache Pinot clusters via the mcp-pinot server due to default insecure settings.","url":"https://insights.sbomify.com/CVE-2026-49257/"}