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CVE-2026-41267

Flowiseai Flowise broken access control

8.1 HIGHPublic exploitEPSS 0.48%
  1. Published23 Apr 2026

Description

Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.0, an improper mass assignment (JSON injection) vulnerability in the account registration endpoint of Flowise Cloud allows unauthenticated attackers to inject server-managed fields and nested objects during account creation. This enables client-controlled manipulation of ownership metadata, timestamps, organization association, and role mappings, breaking trust boundaries in a multi-tenant environment. This vulnerability is fixed in 3.1.0.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityHigh
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Flowiseai Flowise< 3.1.0

Remediation

Fixed in
Flowiseai Flowise≥ 3.1.0

References

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Frequently asked

Is CVE-2026-41267 being actively exploited?

CVE-2026-41267 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.48%.

How severe is CVE-2026-41267?

CVE-2026-41267 has a CVSS 3.1 base score of 8.1, rated high. EPSS estimates a 0.48% probability of exploitation.

Which products are affected by CVE-2026-41267?

Affected products include Flowiseai Flowise.

How do I fix CVE-2026-41267?

Upgrade affected software to a fixed version, for example Flowiseai Flowise 3.1.0 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-41267 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.