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CVE-2026-61644— FastGPT: /api/core/chat/record/getCollectionQuote can disclose cross-tenant dataset text due to an unbound initialId lookup

Quick assessment

Affected
labring FastGPT
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

labring FastGPT是labring公司开源的一款基于大语言模型的开源知识库问答系统。 labring FastGPT 4.14.17版本至4.15.0-beta5之前版本存在授权问题漏洞，该漏洞源于对POST /api/core/chat/record/getCollectionQuote端点的授权验证不当，initialId中心节点查找未绑定已授权上下文，可能导致低权限租户用户利用有效参数获取其他租户的数据集引用或全文内容。

CVSS 7.7 · High EPSS 0.41% · P34

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage

Affected Version Matrix 1

VendorProduct Version RangeStatus
labring FastGPT >= 4.14.17, < 4.15.0-beta5 affected
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I. Basic Information for CVE-2026-61644

Vulnerability Information
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Vulnerability Title
FastGPT: /api/core/chat/record/getCollectionQuote can disclose cross-tenant dataset text due to an unbound initialId lookup
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不正确
Source: CVE Program / CVE List V5
Vulnerability Title
labring FastGPT 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
labring FastGPT是labring公司开源的一款基于大语言模型的开源知识库问答系统。 labring FastGPT 4.14.17版本至4.15.0-beta5之前版本存在授权问题漏洞，该漏洞源于对POST /api/core/chat/record/getCollectionQuote端点的授权验证不当，initialId中心节点查找未绑定已授权上下文，可能导致低权限租户用户利用有效参数获取其他租户的数据集引用或全文内容。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
labring FastGPT >= 4.14.17, < 4.15.0-beta5 -

II. Public POCs for CVE-2026-61644

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 6949 chars
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III. Intelligence Information for CVE-2026-61644

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Patches & Fixes for CVE-2026-61644 (2)

Vendor Advisories for CVE-2026-61644 (1)

Vendor Pages for CVE-2026-61644 (1)

Same Patch Batch · labring · 2026-07-15 · 5 CVEs total

CVE-2026-61643 5.9 MEDIUM FastGPT: workflow runtime can execute another user's private HTTP toolset
CVE-2026-61684 FastGPT: Unauthenticated cross-tenant data access via forgeable plugin-invoke JWT (default
CVE-2026-61646 FastGPT: Shared axios SSRF guard validates only the initial URL before following redirects
CVE-2026-50562 FastGPT: Untrusted PR artifacts are pushed and deployed by privileged preview workflows

IV. Related Vulnerabilities

Same product: FastGPT
Same vendor: labring
Same weakness: CWE-863

V. Comments for CVE-2026-61644

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