What is CVE-2026-91937?

CVE-2026-91937 is a high-severity vulnerability in Flowiseai Flowise, classified under Improper Neutralization of Special Elements in Data Query Logic. CVSS score: 7.5/10. Published 2026-09-15.

How severe is CVE-2026-91937?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Flowiseai Flowise

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.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

Affected products

Flowiseai Flowise

Weakness classification (CWE)

CWE-943 — Improper Neutralization of Special Elements in Data Query Logic

References

disclosure@vulncheck.com (vendor-advisory)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-91937?: CVE-2026-91937 is a high-severity vulnerability in Flowiseai Flowise, classified under Improper Neutralization of Special Elements in Data Query Logic. CVSS score: 7.5/10. Published 2026-09-15.
How severe is CVE-2026-91937?: High severity. CVSS v3 base score is 7.5 out of 10.