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CVE-2026-46440 FlowiseAI CVE debrief

A critical vulnerability, CVE-2026-46440, was found in Flowise, a drag & drop user interface to build a customized large language model flow. The vulnerability has a CVSS score of 9.1 and was patched in version 3.1.2. The issue involves the checkBasicAuth endpoint validating credentials in plaintext without rate limiting and with direct comparison.

Vendor
FlowiseAI
Product
Flowise
CVSS
CRITICAL 9.1
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-08
Original CVE updated
2026-07-23
Advisory published
2026-06-08
Advisory updated
2026-07-23

Who should care

Users of Flowise prior to version 3.1.2 should update to the latest version to mitigate this critical vulnerability.

Technical summary

The checkBasicAuth endpoint in Flowise validates credentials in plaintext without rate limiting and with direct comparison, allowing for potential authentication bypass. This issue has been patched in version 3.1.2.

Defensive priority

high

Recommended defensive actions

  • Update Flowise to version 3.1.2 or later.

Evidence notes

CVE-2026-46440 was published on 2026-06-08T16:16:41.043Z and modified on 2026-06-11T04:06:33.593Z.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-46440 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-46440

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-46440 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-46440

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental 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.