CVE-2026-41279: CWE-639: Authorization Bypass Through User-Controlled Key in FlowiseAI Flowise
Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.0, the text-to-speech generation endpoint (POST /api/v1/text-to-speech/generate) is whitelisted (no auth) and accepts a credentialId directly in the request body. When called without a chatflowId, the endpoint uses the provided credentialId to decrypt the stored credential (e.g., OpenAI or ElevenLabs API key) and generate speech. This vulnerability is fixed in 3.1.0.
AI Analysis
Technical Summary
CVE-2026-41279 is an authorization bypass vulnerability (CWE-639) in FlowiseAI's Flowise product versions before 3.1.0. The unauthenticated POST /api/v1/text-to-speech/generate endpoint accepts a user-controlled credentialId parameter. When no chatflowId is provided, the endpoint uses the credentialId to decrypt stored credentials (e.g., OpenAI or ElevenLabs API keys) and generate speech. This flaw allows attackers to bypass authorization controls and access sensitive credentials. The issue is resolved in Flowise 3.1.0.
Potential Impact
Exploitation of this vulnerability can lead to unauthorized access to sensitive API credentials stored by Flowise, potentially allowing attackers to misuse these credentials for malicious purposes. The CVSS 4.0 base score is 8.2 (high severity), indicating a significant security risk. There are no known exploits in the wild at this time.
Mitigation Recommendations
Upgrade Flowise to version 3.1.0 or later, where this vulnerability has been fixed. Since no official patch or temporary fix details are provided beyond the version update, applying this upgrade is the recommended remediation. Patch status is not explicitly confirmed beyond the version fix; verify with the vendor advisory for the latest guidance.
CVE-2026-41279: CWE-639: Authorization Bypass Through User-Controlled Key in FlowiseAI Flowise
Description
Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.0, the text-to-speech generation endpoint (POST /api/v1/text-to-speech/generate) is whitelisted (no auth) and accepts a credentialId directly in the request body. When called without a chatflowId, the endpoint uses the provided credentialId to decrypt the stored credential (e.g., OpenAI or ElevenLabs API key) and generate speech. This vulnerability is fixed in 3.1.0.
CVSS v4.0
Score 8.2high
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-41279 is an authorization bypass vulnerability (CWE-639) in FlowiseAI's Flowise product versions before 3.1.0. The unauthenticated POST /api/v1/text-to-speech/generate endpoint accepts a user-controlled credentialId parameter. When no chatflowId is provided, the endpoint uses the credentialId to decrypt stored credentials (e.g., OpenAI or ElevenLabs API keys) and generate speech. This flaw allows attackers to bypass authorization controls and access sensitive credentials. The issue is resolved in Flowise 3.1.0.
Potential Impact
Exploitation of this vulnerability can lead to unauthorized access to sensitive API credentials stored by Flowise, potentially allowing attackers to misuse these credentials for malicious purposes. The CVSS 4.0 base score is 8.2 (high severity), indicating a significant security risk. There are no known exploits in the wild at this time.
Mitigation Recommendations
Upgrade Flowise to version 3.1.0 or later, where this vulnerability has been fixed. Since no official patch or temporary fix details are provided beyond the version update, applying this upgrade is the recommended remediation. Patch status is not explicitly confirmed beyond the version fix; verify with the vendor advisory for the latest guidance.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-04-18T14:01:46.802Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69ea89bd87115cfb685d0b1f
Added to database: 4/23/2026, 9:06:05 PM
Last enriched: 4/23/2026, 9:21:01 PM
Last updated: 6/8/2026, 2:18:49 AM
Views: 94
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