CVE-2026-91937: Improper Neutralization of Special Elements in Data Query Logic in FlowiseAI Flowise
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.
AI Analysis
Technical Summary
CVE-2026-91937 is an injection vulnerability in Flowise before version 3.1.4. The flaw arises from improper neutralization of special elements in the overrideConfig.sessionId parameter within the MongoDBMemory node. Because this parameter is used directly in MongoDB queries without adequate sanitization, unauthenticated attackers can craft malicious inputs that exploit MongoDB operators to access chat history data belonging to other users. This vulnerability affects versions from 0 up to but not including 3.1.4.
Potential Impact
An unauthenticated attacker can exploit this vulnerability to read sensitive chat history records of other users from a shared MongoDB collection. The vulnerability does not allow modification or deletion of data, nor does it impact availability, but it compromises confidentiality of user data.
Mitigation Recommendations
Upgrade Flowise to version 3.1.4 or later, where this vulnerability has been fixed by properly sanitizing the overrideConfig.sessionId parameter before use in MongoDB queries. No other mitigations are specified.
CVE-2026-91937: Improper Neutralization of Special Elements in Data Query Logic in FlowiseAI Flowise
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.
CVSS v3.1
Score 7.5high
Affected software
FlowiseAI
Flowise
pkg:github/flowiseai/FlowiseRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-91937 is an injection vulnerability in Flowise before version 3.1.4. The flaw arises from improper neutralization of special elements in the overrideConfig.sessionId parameter within the MongoDBMemory node. Because this parameter is used directly in MongoDB queries without adequate sanitization, unauthenticated attackers can craft malicious inputs that exploit MongoDB operators to access chat history data belonging to other users. This vulnerability affects versions from 0 up to but not including 3.1.4.
Potential Impact
An unauthenticated attacker can exploit this vulnerability to read sensitive chat history records of other users from a shared MongoDB collection. The vulnerability does not allow modification or deletion of data, nor does it impact availability, but it compromises confidentiality of user data.
Mitigation Recommendations
Upgrade Flowise to version 3.1.4 or later, where this vulnerability has been fixed by properly sanitizing the overrideConfig.sessionId parameter before use in MongoDB queries. No other mitigations are specified.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-09-15T11:06:02.263Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6aa9651a55bf5e2cf502eb03
Added to database: 09/15/2026, 15:32:42 UTC
Last enriched: 09/15/2026, 16:01:58 UTC
Last updated: 09/16/2026, 03:23:43 UTC
Views: 8
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.