{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-14538 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-14538 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-14538 is a medium-severity missing authorization vulnerability in Google mcp-toolbox, published on 31 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-14538 and fix it if it is affected.\n\nWhat it is: CVE-2026-14538 is a medium-severity missing authorization vulnerability in Google mcp-toolbox, published on 31 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-14538 in the wild and no public exploit code.\n\nAffected product: Google mcp-toolbox. No package-level version data is available, so check the vendor advisory linked from the reference page.\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-2026-14538/ (Markdown: https://insights.sbomify.com/CVE-2026-14538/index.md)","id":"CVE-2026-14538","markdown":"https://insights.sbomify.com/CVE-2026-14538/index.md","name":"CVE-2026-14538","record":{"aliases":["GHSA-24pp-m59v-92j8"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["data_read","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"MCP Toolbox","requires_auth":"low_privilege","summary":"Authenticated attackers can bypass dataset allowlists in Google MCP Toolbox to read unauthorized schemas and federated data.","user_interaction":"not_required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Google","cpe":[{"product":"mcp_toolbox_for_databases","vendor":"google"}],"cvss":{"score":5.7,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N/E:U","version":"4.0"},"cwes":[{"id":"CWE-863","name":"Incorrect Authorization"},{"id":"CWE-285","name":"Improper Authorization"}],"description":"An improper authorization and security-boundary bypass vulnerability in the bigquery-execute-sql tool component of Google mcp-toolbox versions 0.16.1 through 1.4.0 allows an authenticated attacker to bypass allowedDatasets validation checks. The toolbox relies on the BigQuery dry-run API to enforce dataset restrictions, but due to a fail-open logic flaw, it bypasses validation when the API returns an empty array for specialized constructs. This allows the attacker to extract structural DDL schemas for explicitly excluded datasets via INFORMATION_SCHEMA, and access downstream federated row data via EXTERNAL_QUERY connections.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"BigQuery Dataset Allowlist Bypass via Metadata Dry-Run in MCP Toolbox","id":"CVE-2026-14538","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"missing_authorization","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Denial of Service via Unrestricted Payload Buffering in MCP Toolbox","id":"CVE-2026-14539"},"packages":[],"prev":{"headline":"Authorization Bypass in MCP Toolbox Legacy HTTP Endpoints","id":"CVE-2026-14537"},"products":["mcp-toolbox"],"published":"2026-07-31","related":[{"cvss_score":9.3,"headline":"Path Traversal in googleapis/mcp-toolbox HTTP Tool URL Builder","id":"CVE-2026-11720","kev_date_added":null,"published":"2026-06-29"},{"cvss_score":9.3,"headline":"googleapis/mcp-toolbox: authentication bypass vulnerability in the generic opaque token validation path (validateOpaqueToken)","id":"CVE-2026-11717","kev_date_added":null,"published":"2026-06-18"},{"cvss_score":9.3,"headline":"googleapis/mcp-toolbox: authentication bypass vulnerability in the generic opaque token validation path (validateOpaqueToken)","id":"CVE-2026-11718","kev_date_added":null,"published":"2026-06-18"},{"cvss_score":8.6,"headline":"SQL Injection and Security Boundary Bypass in googleapis/mcp-toolbox","id":"CVE-2026-15829","kev_date_added":null,"published":"2026-07-21"},{"cvss_score":8.6,"headline":"MCP Toolbox for Databases: authenticated authorization bypass","id":"CVE-2026-11719","kev_date_added":null,"published":"2026-06-18"},{"cvss_score":8.1,"headline":"Authorization Bypass in MCP Toolbox Legacy HTTP Endpoints","id":"CVE-2026-14537","kev_date_added":null,"published":"2026-07-31"},{"cvss_score":8,"headline":"Server-Side Request Forgery via Unrestricted HTTP Redirection in MCP Toolbox","id":"CVE-2026-14540","kev_date_added":null,"published":"2026-07-31"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"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":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-07-31","vendors":["Google"]},"summary":"Authenticated attackers can bypass dataset allowlists in Google MCP Toolbox to read unauthorized schemas and federated data.","url":"https://insights.sbomify.com/CVE-2026-14538/"}