CVE-2026-41276: flowise Auth Bypass — Exploit & Fix

Description

Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.0, this vulnerability allows remote attackers to bypass authentication on affected installations of FlowiseAI Flowise. Authentication is not required to exploit this vulnerability. The specific flaw exists within the resetPassword method of the AccountService class. There is no check performed to ensure that a password reset token has actually been generated for a user account. By default the value of the reset token stored in a users account is null, or an empty string if they've reset their password before. An attacker with knowledge of the user's email address can submit a request to the "/api/v1/account/reset-password" endpoint containing a null or empty string reset token value and reset that user's password to a value of their choosing. This vulnerability is fixed in 3.1.0.

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CVSS v3.1 Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS — Exploit Prediction

0.0050

Probability of exploitation

0.66%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-287 Improper Authentication

Affected Products

Vendor	Product	Versions
flowiseai	flowise	< 3.1.0

References

Advisories & Patches

https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-f6hc-c5jr-878p https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-f6hc-c5jr-878p

Exploits

https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-f6hc-c5jr-878p https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-f6hc-c5jr-878p

Frequently Asked Questions

What is CVE-2026-41276? +

Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.0, this vulnerability allows remote attackers to bypass authentication on affected installations of FlowiseAI Flowise. Authentication is not required to exploit this vulnerability. The specific flaw exists within the resetPassword method of the AccountService class. There is no check performed to ensure that a password reset token has actually been generated for a user account. By default the value of the reset token stored in a users account is null, or an empty string if they've reset their password before. An attacker with knowledge of the user's email address can submit a request to the "/api/v1/account/reset-password" endpoint containing a null or empty string reset token value and reset that user's password to a value of their choosing. This vulnerability is fixed in 3.1.0. It has a CVSS v3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2026-41276? +

CVE-2026-41276 has a CVSS v3.1 score of 9.8 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately. The EPSS score is 0.0050, placing it in the 1th percentile for exploitation probability.

What products are affected by CVE-2026-41276? +

CVE-2026-41276 affects products from flowiseai, specifically: flowise. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-41276? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2026-41276