CVE-2026-67621
Flowise 3.1.4 Missing Authorization on Document Store Mutation Endpoints
Description
Flowise through 3.1.4 contains a missing authorization vulnerability that allows authenticated workspace members to perform unauthorized document store operations by accessing unprotected mutation endpoints. Attackers holding only view-level permissions can send direct HTTP requests to the upsert and refresh document store routes to trigger document ingestion, refresh vector database contents, consume embedding API credits, and modify knowledge bases used by downstream chatflows.
INFO
Published Date :
Aug. 6, 2026, 10:18 p.m.
Last Modified :
Oct. 24, 2026, 4:10 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | HIGH | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 3.1 | HIGH | MITRE-CVE | ||||
| CVSS 4.0 | HIGH | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 4.0 | HIGH | [email protected] |
Solution
- Verify user permissions before allowing document store operations.
- Restrict access to mutation endpoints.
- Update Flowise to the latest secure version.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-67621.
| URL | Resource |
|---|---|
| https://flowiseai.com/sunset | Not Applicable |
| https://github.com/Caycon/cve-advisories/blob/main/2026/Flowise/CVE-2026-67621.md | Exploit Third Party Advisory |
| https://www.vulncheck.com/advisories/flowise-missing-authorization-on-document-store-mutation-endpoints | Third Party Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-67621 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-67621
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-67621 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-67621 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Translated by [email protected]
Oct. 24, 2026
Action Type Old Value New Value Changed Translation Title: Flowise de FlowiseAI, Description: Flowise a través de 3.1.4 contiene una vulnerabilidad de autorización faltante que permite a los miembros autenticados del espacio de trabajo realizar operaciones no autorizadas en el almacén de documentos al acceder a puntos finales de mutación no protegidos. Los atacantes que poseen solo permisos de nivel de vista pueden enviar solicitudes HTTP directas a las rutas de upsert y refresh del almacén de documentos para activar la ingesta de documentos, refrescar el contenido de la base de datos vectorial, consumir créditos de la API de incrustación y modificar las bases de conocimiento utilizadas por los chatflows posteriores. Title: Flowise de FlowiseAI, Description: Flowise a través de 3.1.4 contiene una vulnerabilidad de autorización faltante que permite a los miembros autenticados del espacio de trabajo realizar operaciones no autorizadas en el almacén de documentos al acceder a puntos finales de mutación no protegidos. Los atacantes que poseen solo permisos de nivel de vista pueden enviar solicitudes HTTP directas a las rutas de upsert y refresh del almacén de documentos para activar la ingesta de documentos, refrescar el contenido de la base de datos vectorial, consumir créditos de la API de incrustación y modificar las bases de conocimiento utilizadas por los chatflows posteriores. -
CVE Translated by [email protected]
Oct. 23, 2026
Action Type Old Value New Value Added Translation Title: Flowise de FlowiseAI, Description: Flowise a través de 3.1.4 contiene una vulnerabilidad de autorización faltante que permite a los miembros autenticados del espacio de trabajo realizar operaciones no autorizadas en el almacén de documentos al acceder a puntos finales de mutación no protegidos. Los atacantes que poseen solo permisos de nivel de vista pueden enviar solicitudes HTTP directas a las rutas de upsert y refresh del almacén de documentos para activar la ingesta de documentos, refrescar el contenido de la base de datos vectorial, consumir créditos de la API de incrustación y modificar las bases de conocimiento utilizadas por los chatflows posteriores. -
Initial Analysis by [email protected]
Sep. 15, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:flowiseai:flowise:*:*:*:*:*:*:*:* versions up to (including) 3.1.4 Added Reference Type VulnCheck: https://flowiseai.com/sunset Types: Not Applicable Added Reference Type VulnCheck: https://github.com/Caycon/cve-advisories/blob/main/2026/Flowise/CVE-2026-67621.md Types: Exploit, Third Party Advisory Added Reference Type VulnCheck: https://www.vulncheck.com/advisories/flowise-missing-authorization-on-document-store-mutation-endpoints Types: Third Party Advisory -
CVE Modified by [email protected]
Aug. 07, 2026
Action Type Old Value New Value Added Reference https://www.vulncheck.com/advisories/flowise-missing-authorization-on-document-store-mutation-endpoints -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Aug. 07, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-67621', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'poc'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-08-07T14:54:56.663467Z'} -
New CVE Received by [email protected]
Aug. 06, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://github.com/FlowiseAI/Flowise', 'vendor': 'FlowiseAI', 'product': 'Flowise', 'versions': [{'status': 'affected', 'version': '0', 'versionType': 'semver', 'lessThanOrEqual': '3.1.4'}], 'packageURL': 'pkg:github/FlowiseAI/Flowise', 'defaultStatus': 'affected'}] Added Tag unsupported-when-assigned Added Description Flowise through 3.1.4 contains a missing authorization vulnerability that allows authenticated workspace members to perform unauthorized document store operations by accessing unprotected mutation endpoints. Attackers holding only view-level permissions can send direct HTTP requests to the upsert and refresh document store routes to trigger document ingestion, refresh vector database contents, consume embedding API credits, and modify knowledge bases used by downstream chatflows. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L Added CWE CWE-862 Added Reference https://flowiseai.com/sunset Added Reference https://github.com/Caycon/cve-advisories/blob/main/2026/Flowise/CVE-2026-67621.md