{"id":"CVE-2026-40351","state":"PUBLISHED","title":"FastGPT: NoSQL Injection in loginByPassword leads to Authentication Bypass","description":"FastGPT is an AI Agent building platform. In versions prior to 4.14.9.5, the password-based login endpoint uses TypeScript type assertion without runtime validation, allowing an unauthenticated attacker to pass a MongoDB query operator object (e.g., {\"$ne\": \"\"}) as the password field. This NoSQL injection bypasses the password check, enabling login as any user including the root administrator. This issue has been fixed in version 4.14.9.5.","publishedAt":"2026-04-17T21:05:05.911Z","updatedAt":"2026-04-20T14:57:15.664Z","severity":{"score":9.8,"label":"Critical","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","source":"GitHub_M"},"assigner":"GitHub_M","products":["labring FastGPT"],"affected":[{"vendor":"labring","product":"FastGPT","versions":[{"version":"< 4.14.9.5","status":"affected"}]}],"references":["https://github.com/labring/FastGPT/security/advisories/GHSA-x8mx-2mr7-h9xg","https://github.com/labring/FastGPT/commit/bd966d479fbe414d02679cf79f9eaaab3d100a2d","https://github.com/labring/FastGPT/releases/tag/v4.14.9.5"],"weaknesses":["CWE-943"],"ingestedAt":"2026-10-29T20:11:57.932Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/40xxx/CVE-2026-40351.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-40351","state":"PUBLISHED","datePublished":"2026-04-17T21:05:05.911Z","dateUpdated":"2026-04-20T14:57:15.664Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-04-10T22:50:01.359Z"},"containers":{"cna":{"title":"FastGPT: NoSQL Injection in loginByPassword leads to Authentication Bypass","descriptions":[{"lang":"en","value":"FastGPT is an AI Agent building platform. In versions prior to 4.14.9.5, the password-based login endpoint uses TypeScript type assertion without runtime validation, allowing an unauthenticated attacker to pass a MongoDB query operator object (e.g., {\"$ne\": \"\"}) as the password field. This NoSQL injection bypasses the password check, enabling login as any user including the root administrator. This issue has been fixed in version 4.14.9.5."}],"affected":[{"vendor":"labring","product":"FastGPT","versions":[{"version":"< 4.14.9.5","status":"affected"}]}],"references":[{"url":"https://github.com/labring/FastGPT/security/advisories/GHSA-x8mx-2mr7-h9xg","name":"https://github.com/labring/FastGPT/security/advisories/GHSA-x8mx-2mr7-h9xg","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/labring/FastGPT/commit/bd966d479fbe414d02679cf79f9eaaab3d100a2d","name":"https://github.com/labring/FastGPT/commit/bd966d479fbe414d02679cf79f9eaaab3d100a2d","tags":["x_refsource_MISC"]},{"url":"https://github.com/labring/FastGPT/releases/tag/v4.14.9.5","name":"https://github.com/labring/FastGPT/releases/tag/v4.14.9.5","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.8,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-943","lang":"en","description":"CWE-943: Improper Neutralization of Special Elements in Data Query Logic","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-04-17T21:05:05.911Z"},"source":{"advisory":"GHSA-x8mx-2mr7-h9xg","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-04-20T14:47:36.369173Z","id":"CVE-2026-40351","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-04-20T14:57:15.664Z"}}]}}}