{"cve":{"cve_id":"CVE-2026-14540","is_kev":false,"kev_date_added":null,"kev_vendor_project":null,"kev_product":null,"kev_vulnerability_name":null,"kev_short_description":null,"kev_required_action":null,"kev_due_date":null,"kev_known_ransomware":null,"kev_notes":null,"kev_cwes":null,"epss_score":0.00121,"epss_percentile":0.02116,"epss_as_of":"2026-08-26","description":"A Server-Side Request Forgery (SSRF) vulnerability exists in the generic HTTP source and tool components of Google mcp-toolbox versions 0.3.0 through 1.4.0. While the toolbox implements baseline input sanitization for user-controlled parameters, the underlying HTTP client (internal/sources/http/http.go) fails to safely regulate request redirection boundaries. Specifically, the client is initialized without a restrictive CheckRedirect policy hook and lacks target IP validation. An attacker or a malicious data-driven prompt can supply a crafted path parameter that triggers an open redirect or a direct destination swap on the target backend, coercing the mcp-toolbox into blindly following the redirection and making unauthorized requests to internal or arbitrary external endpoints.","published_at":"2026-07-31T01:46:54.942000Z","last_modified_at":"2026-08-08T00:15:26Z","cvss_v3_score":6.1,"cvss_v3_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","cvss_v3_severity":"MEDIUM","cvss_v4_score":8.0,"cvss_v4_vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U","cvss_v4_severity":"HIGH","ssvc_decision":null,"ssvc_exploitation":"none","ssvc_automatable":true,"ssvc_technical_impact":"total","cwes":["CWE-918"],"nvd_references":["https://github.com/googleapis/mcp-toolbox/pull/3448"],"vuln_status":"Analyzed","trending_score":null,"is_trending":false,"has_trended":false,"trended_number_one":false,"trending_peak_score":null,"trending_peak_rank":null,"started_trending_at":null,"trended_number_one_at":null,"summary_generated":null,"summary_generated_at":null,"summary_model":null,"created_at":"2026-07-31T03:03:23.271698Z","updated_at":"2026-08-09T20:17:16.629295Z"},"effective_severity":"HIGH","badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":"3.1","metrics":[{"metric":"AV","name":"Attack Vector","value":"N","value_label":"Network"},{"metric":"AC","name":"Attack Complexity","value":"L","value_label":"Low"},{"metric":"PR","name":"Privileges Required","value":"N","value_label":"None"},{"metric":"UI","name":"User Interaction","value":"R","value_label":"Required"},{"metric":"S","name":"Scope","value":"C","value_label":"Changed"},{"metric":"C","name":"Confidentiality","value":"L","value_label":"Low"},{"metric":"I","name":"Integrity","value":"L","value_label":"Low"},{"metric":"A","name":"Availability","value":"N","value_label":"None"}]},"cvss_v4_decoded":{"version":"4.0","metrics":[{"metric":"AV","name":"Attack Vector","value":"N","value_label":"Network"},{"metric":"AC","name":"Attack Complexity","value":"L","value_label":"Low"},{"metric":"AT","name":"Attack Requirements","value":"N","value_label":"None"},{"metric":"PR","name":"Privileges Required","value":"N","value_label":"None"},{"metric":"UI","name":"User Interaction","value":"N","value_label":"None"},{"metric":"VC","name":"Confidentiality (Vulnerable System)","value":"H","value_label":"High"},{"metric":"VI","name":"Integrity (Vulnerable System)","value":"H","value_label":"High"},{"metric":"VA","name":"Availability (Vulnerable System)","value":"N","value_label":"None"},{"metric":"SC","name":"Confidentiality (Subsequent System)","value":"N","value_label":"None"},{"metric":"SI","name":"Integrity (Subsequent System)","value":"N","value_label":"None"},{"metric":"SA","name":"Availability (Subsequent System)","value":"N","value_label":"None"},{"metric":"E","name":"E","value":"U","value_label":"Unchanged"}]},"affected":[{"vendor_slug":"google","vendor_name":"Google","product_slug":"mcp-toolbox","product_name":"mcp-toolbox","version_start":"0.3.0","version_start_inclusive":true,"version_end":"1.4.0","version_end_inclusive":true,"cpe23_uri":"cve5:google:mcp-toolbox:0.3.0:1.4.0"},{"vendor_slug":"google","vendor_name":"Google","product_slug":"mcp-toolbox-for-databases","product_name":"MCP Toolbox for Databases","version_start":"0.3.0","version_start_inclusive":true,"version_end":"1.5.0","version_end_inclusive":false,"cpe23_uri":"cpe:2.3:a:google:mcp_toolbox_for_databases:*:*:*:*:*:*:*:*"}],"exploit_refs":[],"news":[],"references":[{"url":"https://github.com/googleapis/mcp-toolbox/pull/3448","source_type":"PATCH","tags":["patch"]}],"timeline":[{"type":"published","at":"2026-07-31T01:46:54.942000Z","label":"CVE published","source":null},{"type":"ssvc_changed","at":"2026-07-31T18:18:26.046167Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"ssvc_changed","at":"2026-07-31T18:18:26.046167Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"ssvc_changed","at":"2026-07-31T18:18:26.046167Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"cvss_changed","at":"2026-08-09T20:17:16.629295Z","label":"CVSS score revised","source":"nvd"},{"type":"cvss_changed","at":"2026-08-09T20:17:16.629295Z","label":"CVSS score revised","source":"nvd"},{"type":"cvss_changed","at":"2026-08-09T20:17:16.629295Z","label":"CVSS score revised","source":"nvd"}]}