CVE-2026-91937

HIGH 7.5

Flowise before 3.1.4 NoSQL Injection via sessionId

CVSS Score

7.5

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-943
Vendor	flowiseai
Product	flowise
Published	Sep 15, 2026
Last Updated	Sep 15, 2026

Stay Ahead of the Next One

Get instant alerts for flowiseai flowise

Be the first to know when new high vulnerabilities affecting flowiseai flowise are published — delivered to Slack, Telegram or Discord.

Get Free Alerts → Free · No credit card · 60 sec setup

CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Affected Versions

FlowiseAI / Flowise

0 < 3.1.4

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-wpvf-4vfx-rgxm vulncheck.com: https://www.vulncheck.com/advisories/flowise-before-3.1.4-nosql-injection-via-sessionid

Credits

🔍 DongShuaike