CVE-2026-54601 | THREATINT

Description

FastGPT is an open source AI knowledge base platform. From 4.14.17 to before 4.15.0-beta4, FastGPT allows an authenticated tenant user to call POST /api/core/dataset/collection/create/reTrainingCollection in a way that persists a server-owned datasetId value from another tenant. This creates mixed dataset objects and downstream dataset, collection, and training endpoints then make authorization decisions from inconsistent ownership anchors, allowing cross-tenant read, update, and delete access when mixed object ids are known. This issue is fixed in version 4.15.0-beta4.

PUBLISHED Reserved 2026-06-15 | Published 2026-07-07 | Updated 2026-07-08 | Assigner GitHub_M

MEDIUM: 6.3CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Problem types

CWE-915: Improperly Controlled Modification of Dynamically-Determined Object Attributes

Product status

>= 4.14.17, < 4.15.0-beta4

affected

References

github.com/...astGPT/security/advisories/GHSA-qxcq-48gr-93pj exploit

github.com/...astGPT/security/advisories/GHSA-qxcq-48gr-93pj

github.com/labring/FastGPT/pull/7071

github.com/...ommit/54a53e7d4399f1dfa2913394442c3cf6de672fb3

github.com/labring/FastGPT/releases/tag/v4.15.0-beta4

cve.org (CVE-2026-54601)

nvd.nist.gov (CVE-2026-54601)

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