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Vulnerability record · CVE-2026-61644 · published 15 July 2026

CVE-2026-61644: Incorrect authorization vulnerability

FastGPT is a knowledge-based AI application platform. From 4.14.17 until 4.15.0-beta5, the POST /api/core/chat/record/getCollectionQuote endpoint authenticates the caller's chat and collection context, but the initialId center-node lookup is not bound to that authorized context. A low-privileged tenant user can call the endpoint with valid attacker-owned appId, chatId, chatItemDataId, and collectionId values while supplying another tenant's dataset data id as initialId, causing the response to include foreign dataset quote or full-text content. This issue is fixed in version 4.15.0-beta5.

7.7 CVSS 3.1 High EPSS 0.42% · top 66.8% CWE-863 · Incorrect authorization Deferred
7.7CVSS 3.1 base score
0.42%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
5References
15 Jul 2026Last modified by NVD

Description

FastGPT is a knowledge-based AI application platform. From 4.14.17 until 4.15.0-beta5, the POST /api/core/chat/record/getCollectionQuote endpoint authenticates the caller's chat and collection context, but the initialId center-node lookup is not bound to that authorized context. A low-privileged tenant user can call the endpoint with valid attacker-owned appId, chatId, chatItemDataId, and collectionId values while supplying another tenant's dataset data id as initialId, causing the response to include foreign dataset quote or full-text content. This issue is fixed in version 4.15.0-beta5.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

References

LinkTags
https://github.com/labring/FastGPT/commit/0c1840c7773c5be5d777f86228651479e02155db
https://github.com/labring/FastGPT/pull/7173
https://github.com/labring/FastGPT/releases/tag/v4.15.0-beta5
https://github.com/labring/FastGPT/security/advisories/GHSA-mmg6-2g54-j896
https://github.com/labring/FastGPT/security/advisories/GHSA-mmg6-2g54-j896

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Source: NIST National Vulnerability Database (record CVE-2026-61644), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.