CVE-2026-41273: CWE-306: Missing Authentication for Critical Function in FlowiseAI Flowise
Flowise versions prior to 3. 1. 0 have an authentication bypass vulnerability that allows unauthenticated attackers to obtain OAuth 2. 0 access tokens linked to public chatflows. By accessing a public chatflow configuration endpoint, attackers can retrieve internal workflow data including OAuth credential identifiers, enabling them to refresh and acquire valid OAuth tokens without authentication. This vulnerability is fixed in version 3. 1. 0.
AI Analysis
Technical Summary
CVE-2026-41273 is a high-severity authentication bypass vulnerability (CWE-306) in FlowiseAI's Flowise product versions before 3.1.0. The flaw allows unauthenticated attackers to access a public chatflow configuration endpoint and retrieve sensitive internal workflow data, including OAuth credential identifiers. These credentials can be used to refresh and obtain valid OAuth 2.0 access tokens without any authentication, potentially compromising OAuth-protected resources. The vulnerability is resolved in Flowise version 3.1.0.
Potential Impact
An attacker exploiting this vulnerability can obtain valid OAuth 2.0 access tokens without authentication, potentially leading to unauthorized access to resources protected by these tokens. This could result in unauthorized actions or data exposure within systems relying on these OAuth credentials.
Mitigation Recommendations
Upgrade Flowise to version 3.1.0 or later, where this authentication bypass vulnerability is fixed. Since no official patch links or vendor advisory are provided, verify the upgrade from the official FlowiseAI sources before deployment. Patch status is not yet confirmed by vendor advisory; check official vendor communications for current remediation guidance.
CVE-2026-41273: CWE-306: Missing Authentication for Critical Function in FlowiseAI Flowise
Description
Flowise versions prior to 3. 1. 0 have an authentication bypass vulnerability that allows unauthenticated attackers to obtain OAuth 2. 0 access tokens linked to public chatflows. By accessing a public chatflow configuration endpoint, attackers can retrieve internal workflow data including OAuth credential identifiers, enabling them to refresh and acquire valid OAuth tokens without authentication. This vulnerability is fixed in version 3. 1. 0.
CVSS v4.0
Score 7.7high
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-41273 is a high-severity authentication bypass vulnerability (CWE-306) in FlowiseAI's Flowise product versions before 3.1.0. The flaw allows unauthenticated attackers to access a public chatflow configuration endpoint and retrieve sensitive internal workflow data, including OAuth credential identifiers. These credentials can be used to refresh and obtain valid OAuth 2.0 access tokens without any authentication, potentially compromising OAuth-protected resources. The vulnerability is resolved in Flowise version 3.1.0.
Potential Impact
An attacker exploiting this vulnerability can obtain valid OAuth 2.0 access tokens without authentication, potentially leading to unauthorized access to resources protected by these tokens. This could result in unauthorized actions or data exposure within systems relying on these OAuth credentials.
Mitigation Recommendations
Upgrade Flowise to version 3.1.0 or later, where this authentication bypass vulnerability is fixed. Since no official patch links or vendor advisory are provided, verify the upgrade from the official FlowiseAI sources before deployment. Patch status is not yet confirmed by vendor advisory; check official vendor communications for current remediation guidance.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-04-18T14:01:46.801Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69ea782987115cfb6850f83a
Added to database: 4/23/2026, 7:51:05 PM
Last enriched: 5/1/2026, 8:44:25 PM
Last updated: 6/7/2026, 7:23:39 PM
Views: 95
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