CVE-2026-90533: Missing Authorization in FlowiseAI Flowise
Flowise before 3.1.4 contains a broken access control vulnerability in GET /api/v1/organizationuser that allows any authenticated organization member to retrieve the organization owner's full user record including bcrypt password hash and temporary tokens. Attackers can query the endpoint with any user ID to obtain the owner's credential hash for offline cracking, enabling account takeover of the highest-privileged account.
AI Analysis
Technical Summary
CVE-2026-90533 describes a broken access control vulnerability in Flowise prior to version 3.1.4. Authenticated organization members can exploit the GET /api/v1/organizationuser API endpoint to access the full user record of the organization owner, including the bcrypt password hash and temporary tokens. This unauthorized data disclosure facilitates offline cracking of the owner's credentials, which can lead to account takeover of the highest-privileged user. The vulnerability has a CVSS 4.0 base score of 6.0, indicating medium severity, with network attack vector, high attack complexity, and requiring low privileges but no user interaction.
Potential Impact
An attacker who is an authenticated member of the organization can retrieve sensitive credential data of the organization owner, including password hashes and temporary tokens. This can lead to offline password cracking and subsequent account takeover of the highest-privileged account, potentially compromising the entire organization within Flowise.
Mitigation Recommendations
A fix is available in Flowise version 3.1.4. Users should upgrade to version 3.1.4 or later to remediate this broken access control vulnerability. No additional mitigation steps are indicated by the vendor advisory.
CVE-2026-90533: Missing Authorization in FlowiseAI Flowise
Description
Flowise before 3.1.4 contains a broken access control vulnerability in GET /api/v1/organizationuser that allows any authenticated organization member to retrieve the organization owner's full user record including bcrypt password hash and temporary tokens. Attackers can query the endpoint with any user ID to obtain the owner's credential hash for offline cracking, enabling account takeover of the highest-privileged account.
CVSS v4.0
Score 6.0medium
Affected software
FlowiseAI
Flowise
pkg:github/flowiseai/FlowiseRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-90533 describes a broken access control vulnerability in Flowise prior to version 3.1.4. Authenticated organization members can exploit the GET /api/v1/organizationuser API endpoint to access the full user record of the organization owner, including the bcrypt password hash and temporary tokens. This unauthorized data disclosure facilitates offline cracking of the owner's credentials, which can lead to account takeover of the highest-privileged user. The vulnerability has a CVSS 4.0 base score of 6.0, indicating medium severity, with network attack vector, high attack complexity, and requiring low privileges but no user interaction.
Potential Impact
An attacker who is an authenticated member of the organization can retrieve sensitive credential data of the organization owner, including password hashes and temporary tokens. This can lead to offline password cracking and subsequent account takeover of the highest-privileged account, potentially compromising the entire organization within Flowise.
Mitigation Recommendations
A fix is available in Flowise version 3.1.4. Users should upgrade to version 3.1.4 or later to remediate this broken access control vulnerability. No additional mitigation steps are indicated by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-09-12T11:12:50.791Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6aa5465055bf5e2cf54629ca
Added to database: 09/12/2026, 12:32:16 UTC
Last enriched: 09/12/2026, 13:06:17 UTC
Last updated: 09/13/2026, 00:47:19 UTC
Views: 8
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