CVE-2026-69264 FlowiseAI CVE debrief

Who should care

Flowise users and administrators should assess their exposure to this vulnerability and take steps to remediate it. This includes upgrading to version 3.1.3 or later and restricting access to chatflow creation and update permissions.

Why it matters

CVE-2026-69264 is a critical vulnerability in Flowise that allows for remote code execution on the host system. Flowise users and administrators should assess their exposure and take steps to remediate it, including upgrading to version 3.1.3 or later and restricting access to chatflow creation and update permissions. The exact scope of affected versions and systems requires verification from the supplied official sources.

• Remote code execution on the host system
• Potential for file I/O or OS command execution
• Elevation of privileges for attackers
• Possible disruption of Flowise services

Technical summary

The vulnerability exists in the CSVAgent component of Flowise, where an attacker-controlled segment of the csvFile data URI is interpolated directly into a Python source-code template. This allows an attacker to break out of the Python string literal and execute arbitrary file I/O or OS commands as the Flowise process. The vulnerability is caused by the lack of validation and sanitization of user input in the CSVAgent component, which allows an attacker to inject malicious code. The vulnerability can be exploited by a workspace user with chatflows:create or agentflows/chatflows update permission, who can plant a CSV Agent node with a crafted csvFile.

Defensive priority

High

Recommended defensive actions

• Upgrade Flowise to version 3.1.3 or later
• Restrict access to the chatflow creation and update permissions
• Monitor for suspicious activity on the Flowise system
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record and NVD detail page provide information about the vulnerability, including its CVSS score and severity. The vendor, FlowiseAI, has provided a fix for the vulnerability in version 3.1.3. However, the exact scope of affected versions and systems requires verification from the supplied official sources.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.