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HIGH

CVE-2026-91937

CVSS v3

7.5

HIGH

EPSS Score

0.5 %

exploit probability, as of 2026-09-28

CISA KEV

No

known exploited

Exploitation

—

SSVC status

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.

Technical details

Published
2026-09-15
Last Modified
2026-09-15

Frequently asked questions

What is CVE-2026-91937?

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.

Is CVE-2026-91937 actively exploited?

Active exploitation of CVE-2026-91937 has not been confirmed. Its EPSS score was 0.5% on 2026-09-28, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-91937?

CVE-2026-91937 has a CVSS v3 base score of 7.5 (HIGH severity).

Is CVE-2026-91937 affecting your environment?

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