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CVE-2026-41266

Flowiseai Flowise broken access control

7.5 HIGHPublic exploitEPSS 0.50%
  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, /api/v1/public-chatbotConfig/:id ep exposes sensitive data including API keys, HTTP authorization headers and internal configuration without any authentication. An attacker with knowledge just of a chatflow UUID can retrieve credentials stored in password type fields and HTTP headers, leading to credential theft and more. This vulnerability is fixed in 3.1.0.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected products

Flowiseai Flowise< 3.1.0

Remediation

Fixed in
Flowiseai Flowise≥ 3.1.0

References

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Frequently asked

Is CVE-2026-41266 being actively exploited?

CVE-2026-41266 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.50%.

How severe is CVE-2026-41266?

CVE-2026-41266 has a CVSS 3.1 base score of 7.5, rated high. EPSS estimates a 0.50% probability of exploitation.

Which products are affected by CVE-2026-41266?

Affected products include Flowiseai Flowise.

How do I fix CVE-2026-41266?

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-2026-41266 against the real software inventory on every managed device, as each hourly inventory arrives. 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.