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CVE-2026-91937— Flowise before 3.1.4 NoSQL Injection via sessionId

Quick assessment

Affected

FlowiseAI Flowise

Exploitation

No confirmed in-the-wild exploitation; assess based on exposure

Recommended action

Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 3.1.4 之前的 Flowise 中，MongoDBMemory 节点在使用参数构建 MongoDB 查询时，未对其进行适当的净化处理。未经身份验证的攻击者可以通过预测 API 提交 MongoDB 操作符对象，从而从共享集合中读取属于其他用户的聊天历史记录。

CVSS 7.5 · High Updated Sep 16, 2026

Possible ATT&CK Techniques 1 AI

T1079.001

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Vulnerability Information

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Vulnerability Title

Flowise before 3.1.4 NoSQL Injection via sessionId

Source: CVE Program / CVE List V5

Vulnerability Description

Flowise before 3.1.4 fails to sanitize the overrideConfig.sessionId parameter before using it in MongoDB queries within the MongoDBMemory node. Unauthenticated attackers can submit MongoDB operator objects through the prediction API to read chat history records belonging to other users from the shared collection.

Source: CVE Program / CVE List V5

CVSS Information

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

Source: CVE Program / CVE List V5

Vulnerability Type

数据查询逻辑中特殊元素的不当中和

Source: CVE Program / CVE List V5

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
FlowiseAI	Flowise	0 ~ 3.1.4	-

II. Public POCs for CVE-2026-91937

#	POC Description	Source Link	Shenlong Link

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III. Intelligence Information for CVE-2026-91937

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Vendor Advisories for CVE-2026-91937 (2)

🔗 Cross-Session Data Leakage via NoSQL Injection in MongoDBMemory Node · Advisory · FlowiseAI/Flowise · GitHub Read full article vendor-advisory
🔗 Flowise before 3.1.4 NoSQL Injection via sessionId | Advisories | VulnCheck third-party-advisory

https://www.cve.org/CVERecord?id=CVE-2026-91937

Same Patch Batch · FlowiseAI · 2026-09-15 · 10 CVEs total

CVE-2026-91934	8.8 HIGH	Flowise before 3.1.4 Remote Code Execution via SQL Database Chain
CVE-2026-91931	8.5 HIGH	Flowise before 3.1.4 Remote Code Execution via Custom MCP npx
CVE-2026-91932	8.5 HIGH	Flowise before 3.1.4 Remote Code Execution via cwd Parameter
CVE-2026-91935	8.3 HIGH	Flowise before 3.1.4 SSRF and API Key Exfiltration via Chat Model Nodes
CVE-2026-91930	7.5 HIGH	Flowise before 3.1.4 Cross-Tenant Organization Admin Takeover
CVE-2026-91933	7.1 HIGH	Flowise before 3.1.4 Authorization Bypass via openai-realtime
CVE-2026-91929	7.1 HIGH	Flowise before 3.1.4 Cross-Tenant Authorization Bypass
CVE-2026-91938	7.1 HIGH	Flowise before 3.1.4 Server-Side Request Forgery via document loaders
CVE-2026-91936	6.8 MEDIUM	Flowise before 3.1.4 Script Injection via Docker Workflows

IV. Related Vulnerabilities

Same product: Flowise

Same vendor: FlowiseAI

Same weakness: CWE-943

V. Comments for CVE-2026-91937

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Goal Reached Thanks to every supporter — we hit 100%!

CVE-2026-91937— Flowise before 3.1.4 NoSQL Injection via sessionId

Quick assessment

Possible ATT&CK Techniques 1 AI

I. Basic Information for CVE-2026-91937

Vulnerability Information

Vulnerability Title

Vulnerability Description

CVSS Information

Vulnerability Type

Affected Products

II. Public POCs for CVE-2026-91937

III. Intelligence Information for CVE-2026-91937

Vendor Advisories for CVE-2026-91937 (2)

Same Patch Batch · FlowiseAI · 2026-09-15 · 10 CVEs total

IV. Related Vulnerabilities

V. Comments for CVE-2026-91937

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