Langflow: Path Traversal in Knowledge Bases API via Creation Endpoint

SummaryLangflow is vulnerable to Path Traversal in the Knowledge Bases API POST /api/v1/knowledgebases. This occurs because user-supplied knowledge base names are used directly to create file paths without proper sanitization or containment checks. An authenticated attacker can exploit this flaw ...

PYSEC-2026-2566 Langflow: Path Traversal in Knowledge Bases API via Creation Endpoint

Summary Langflow is vulnerable to Path Traversal in the Knowledge Bases API POST /api/v1/knowledgebases. This occurs because user-supplied knowledge base names are used directly to create file paths without proper sanitization or containment checks. An authenticated attacker can exploit this flaw...

PYSEC-2026-2707 Open WebUI vulnerable to Global Knowledge Base Enumeration via knowledge-bases Meta-Collection

Global Knowledge Base Enumeration via knowledge-bases Meta-Collection Affected Component Retrieval collection access validation: - backend/openwebui/routers/retrieval.py lines 2330-2355, validatecollectionaccess - backend/openwebui/routers/retrieval.py query endpoints, e.g. POST /query/doc Affect...

Open WebUI vulnerable to Global Knowledge Base Enumeration via knowledge-bases Meta-Collection

Global Knowledge Base Enumeration via knowledge-bases Meta-Collection Affected ComponentRetrieval collection access validation:- backend/openwebui/routers/retrieval.py lines 2330-2355, validatecollectionaccess- backend/openwebui/routers/retrieval.py query endpoints, e.g. POST /query/doc Affected...

PYSEC-2026-2729 Open WebUI has Unauthorized File and Knowledge Base Content Access via RAG Vector Search

Unauthorized File and Knowledge Base Content Access via RAG Vector Search Affected Component RAG source resolution in chat completion pipeline: - backend/openwebui/retrieval/utils.py lines 963-965, 1063-1068, 1126-1131 in getsourcesfromitems Affected Versions Current main branch commit 6fdd19bf1...

PT-2026-59371

Unauthorized File and Knowledge Base Content Access via RAG Vector Search Affected Component RAG source resolution in chat completion pipeline: - backend/open webui/retrieval/utils.py lines 963-965, 1063-1068, 1126-1131 in get sources from items Affected Versions Current main branch commit...

PT-2026-59351

Global Knowledge Base Enumeration via knowledge-bases Meta-Collection Affected Component Retrieval collection access validation: - backend/open webui/routers/retrieval.py lines 2330-2355, validate collection access - backend/open webui/routers/retrieval.py query endpoints, e.g. POST /query/doc...

PT-2026-56883

Name of the Vulnerable Software and Affected Versions Open WebUI versions prior to 0.10.0 Description The file upload path fails to apply the necessary write-access checks when the metadata.knowledge id variable is provided. This allows users with read-only permissions to bypass the security...

Langflow Knowledge Bases API is Vulnerable to Path Traversal

SummaryLangflow is vulnerable to Path Traversal in the Knowledge Bases API DELETE /api/v1/knowledgebases. This occurs because user-supplied knowledge base names are concatenated directly into file paths without proper sanitization or boundary validation. An authenticated attacker can exploit this...

PYSEC-2026-377 Langflow Knowledge Bases API is Vulnerable to Path Traversal

Summary Langflow is vulnerable to Path Traversal in the Knowledge Bases API DELETE /api/v1/knowledgebases. This occurs because user-supplied knowledge base names are concatenated directly into file paths without proper sanitization or boundary validation. An authenticated attacker can exploit thi...

PT-2026-53464

Summary Langflow is vulnerable to Path Traversal in the Knowledge Bases API DELETE /api/v1/knowledge bases. This occurs because user-supplied knowledge base names are concatenated directly into file paths without proper sanitization or boundary validation. An authenticated attacker can exploit th...

CVE-2026-42867

Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to 1.9.0, Langflow is vulnerable to Path Traversal in the Knowledge Bases API POST /api/v1/knowledgebases. This occurs because user-supplied knowledge base names are used directly to create file paths without...

CVE-2026-42867 Langflow: Path Traversal in Knowledge Bases API via Creation Endpoint

Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to 1.9.0, Langflow is vulnerable to Path Traversal in the Knowledge Bases API POST /api/v1/knowledgebases. This occurs because user-supplied knowledge base names are used directly to create file paths without...

CVE-2026-42867 Langflow: Path Traversal in Knowledge Bases API via Creation Endpoint

Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to 1.9.0, Langflow is vulnerable to Path Traversal in the Knowledge Bases API POST /api/v1/knowledgebases. This occurs because user-supplied knowledge base names are used directly to create file paths without...

CVE-2026-42867 Langflow: Path Traversal in Knowledge Bases API via Creation Endpoint

Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to 1.9.0, Langflow is vulnerable to Path Traversal in the Knowledge Bases API POST /api/v1/knowledgebases. This occurs because user-supplied knowledge base names are used directly to create file paths without...

CVE-2026-42867

CVE-2026-42867 – Langflow exposed path traversal via the Knowledge Bases API (POST /api/v1/knowledge_bases). The root cause is that user-supplied base names are concatenated into file paths without proper containment checks, allowing an authenticated attacker to create directories and write files...

EUVD-2026-38518

Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to 1.9.0, Langflow is vulnerable to Path Traversal in the Knowledge Bases API POST /api/v1/knowledgebases. This occurs because user-supplied knowledge base names are used directly to create file paths without...

CVE-2026-42867: Improper Limitation of a Pathname to a Restricted Directory

Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to 1.9.0, Langflow is vulnerable to Path Traversal in the Knowledge Bases API POST /api/v1/knowledgebases. This occurs because user-supplied knowledge base names are used directly to create file paths without...

Missing Authorization

Overview open-webui is an Open WebUI Affected versions of this package are vulnerable to Missing Authorization in the searchknowledgefiles function when native function calling is enabled and the selected model has no attached knowledge bases. An attacker can retrieve metadata for files from...

Langflow: Path Traversal in Knowledge Bases API via Creation Endpoint

Summary Langflow is vulnerable to Path Traversal in the Knowledge Bases API POST /api/v1/knowledgebases. This occurs because user-supplied knowledge base names are used directly to create file paths without proper sanitization or containment checks. An authenticated attacker can exploit this flaw...