{"id":"CVE-2026-54601","aliases":["EUVD-2026-42114","GHSA-qxcq-48gr-93pj"],"status":"published","title":"FastGPT: reTrainingCollection allows server-owned datasetId override causing cross-tenant authorization confusion","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.","severity":{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00296,"percentile":0.22486,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-915"],"published":"2026-07-07T21:16:12Z","modified":"2026-10-28T02:31:08Z","products":[{"vendor":"labring","product":"fastgpt"}],"references":[{"url":"https://github.com/labring/FastGPT/security/advisories/GHSA-qxcq-48gr-93pj","tags":["x_refsource_CONFIRM","exploit","advisory"]},{"url":"https://github.com/labring/FastGPT/pull/7071","tags":["x_refsource_MISC","fix"]},{"url":"https://github.com/labring/FastGPT/commit/54a53e7d4399f1dfa2913394442c3cf6de672fb3","tags":["x_refsource_MISC","fix"]},{"url":"https://github.com/labring/FastGPT/releases/tag/v4.15.0-beta4","tags":["x_refsource_MISC","web"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54601.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-54601","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-54601","title":"FastGPT: reTrainingCollection allows server-owned datasetId override causing cross-tenant authorization confusion","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.","status":"published","published":"2026-07-07T21:16:12.976Z","modified":"2026-07-08T13:53:13.863Z","cvss":[{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","level":"medium","assessor":"cna"}],"cwes":["CWE-915"],"updated_at":"2026-11-02T13:37:58.613221Z"}],"euvd":[{"id":"EUVD-2026-42114","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.","status":"published","published":"2026-07-07T21:16:12Z","modified":"2026-07-08T13:53:13Z","cvss":[{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","level":"medium"}],"updated_at":"2026-11-02T18:20:10.578977Z"}],"nvd":[{"id":"CVE-2026-54601","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.","status":"published","published":"2026-07-07T22:16:53.06Z","modified":"2026-10-25T20:10:00.147Z","cvss":[{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","level":"medium","assessor":"secondary"}],"cwes":["CWE-915"],"updated_at":"2026-11-02T14:12:28.040501Z"}],"osv":[{"id":"CVE-2026-54601","title":"FastGPT: reTrainingCollection allows server-owned datasetId override causing cross-tenant authorization confusion","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.","status":"published","published":"2026-07-07T21:16:12.976Z","modified":"2026-10-28T02:31:08.557855678Z","cvss":[{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","level":"medium"}],"cwes":["CWE-915"],"updated_at":"2026-11-02T15:45:10.818486Z"}]}}