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CVE-2026-40351

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.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:f9729a7db177d21a6a3ccea099051a8136354dcd0e7bf7c0a1fa1ccb710e1a1a
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"FastGPT","vendor":"labring","versions":[{"status":"affected","version":"< 4.14.9.5"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:ccb6cac3cfade01787c47fa7b1a66d5f2fcb8a7a148185adda0321fe169103cf · sha256:4f299fd5382c0e9f… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"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"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:ccb6cac3cfade01787c47fa7b1a66d5f2fcb8a7a148185adda0321fe169103cf · sha256:4f299fd5382c0e9f… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-943","description":"CWE-943: Improper Neutralization of Special Elements in Data Query Logic","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:ccb6cac3cfade01787c47fa7b1a66d5f2fcb8a7a148185adda0321fe169103cf · sha256:4f299fd5382c0e9f… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"name":"https://github.com/labring/FastGPT/commit/bd966d479fbe414d02679cf79f9eaaab3d100a2d","tags":["x_refsource_MISC"],"url":"https://github.com/labring/FastGPT/commit/bd966d479fbe414d02679cf79f9eaaab3d100a2d"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ccb6cac3cfade01787c47fa7b1a66d5f2fcb8a7a148185adda0321fe169103cf · sha256:4f299fd5382c0e9f… · /containers/cna/references/1
{"name":"https://github.com/labring/FastGPT/releases/tag/v4.14.9.5","tags":["x_refsource_MISC"],"url":"https://github.com/labring/FastGPT/releases/tag/v4.14.9.5"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ccb6cac3cfade01787c47fa7b1a66d5f2fcb8a7a148185adda0321fe169103cf · sha256:4f299fd5382c0e9f… · /containers/cna/references/2
{"name":"https://github.com/labring/FastGPT/security/advisories/GHSA-x8mx-2mr7-h9xg","tags":["x_refsource_CONFIRM"],"url":"https://github.com/labring/FastGPT/security/advisories/GHSA-x8mx-2mr7-h9xg"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:ccb6cac3cfade01787c47fa7b1a66d5f2fcb8a7a148185adda0321fe169103cf · sha256:4f299fd5382c0e9f… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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