2026-07 Cumulative Update for Windows 10 Version 1809 for x86-based Systems (KB5099538)

2026-07 Cumulative Update for Windows 10 Version 1809 for x86-based Systems KB5099538...

2026-07 Cumulative Update for Windows 10 Version 22H2 for x86-based Systems (KB5099539)

2026-07 Cumulative Update for Windows 10 Version 22H2 for x86-based Systems KB5099539...

2026-07 Cumulative Update for Windows 10 Version 1809 for x64-based Systems (KB5099538)

2026-07 Cumulative Update for Windows 10 Version 1809 for x64-based Systems KB5099538...

Security Bulletin: Langflow is affected by remote code execution, denial of service, path traversal, and exposed credentials due to multiple unauthenticated and insufficiently authorized API endpoints

Summary Langflow provides a visual interface for constructing and executing AI-powered agent workflows, exposing HTTP API endpoints for flow execution, file management, vector store operations, and Model Context Protocol MCP server configuration. An attacker could exploit insufficient validation...

July 14, 2026—KB5099538 (OS Build 17763.9020)

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Description of the security update for Office 2016: July 14, 2026 (KB5002273)

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July 14, 2026—KB5099444 (Monthly Rollup)

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July 14, 2026—KB5099414 (OS Build 22631.7376)

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July 14, 2026-Security and Quality Rollup for .NET Framework 4.6.2, 4.7, 4.7.1, 4.7.2 for Windows Server 2012 (KB5100990)

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389-ds-base security update

1.3.11.1-5.0.9 - Security fix for CVE-2026-9064 Orabug: 39570202 1.3.11.1-5.0.7 - Security fix for CVE-2025-14905 Orabug: 39146844 1.3.11.1-5.0.5 - Allow Uniqueness plugin to search uniqueness attributes using custom matching rules Orabug: 38388205...

PYSEC-2026-2750 Open WebUI: RAG ACL Bypass in Milvus Multitenancy Mode

RAG ACL Bypass in Milvus Multitenancy Mode Summary This is a bypass of the fix for: - GHSA-h36f-rqpx-j5wx - CVE-2026-44560 - "Unauthorized File and Knowledge Base Content Access via RAG Vector Search" Open WebUI added collection-level ACL checks, but the patch can still be bypassed when Milvus...

PYSEC-2026-2721 Open WebUI BOLA: `search_knowledge_files` Allows Unauthorized Knowledge Base File Enumeration

Summary Open WebUI has a Broken Object Level Authorization BOLA vulnerability in the builtin searchknowledgefiles tool. When native function calling is enabled and the selected model has no attached knowledge bases, an authenticated user can call searchknowledgefiles with an arbitrary knowledgeid...

PYSEC-2026-2999 Regression in pymdownx.snippets reintroduces sibling-prefix path traversal bypass despite restrict_base_path

Summary pymdownx.snippets has a regression of the CVE-2023-32309 / GHSA-jh85-wwv9-24hv fix. With restrictbasepath: True the default, the current filename.startswithbase containment check does not enforce a directory boundary. As a result, a markdown snippet directive can read files from sibling...

PYSEC-2026-2752 Open WebUI: Cross-User File Access via Unchecked file_id in Folder Knowledge and Knowledge-Base Attach Endpoints

Cross-User File Access via Unchecked fileid in Folder Knowledge and Knowledge-Base Attach Endpoints Summary Multiple endpoints accept a user-supplied fileid and attach the referenced file to a resource the caller controls folder knowledge, knowledge-base contents without verifying that the caller...

PYSEC-2026-2692 Open WebUI: shared-chat branch ignores access_type, allowing unauthorized file deletion

Summary Any authenticated user can permanently delete files owned by other users via DELETE /api/v1/files/id when the target file is referenced in any shared chat. The hasaccesstofile authorization gate unconditionally grants access through its shared-chat branch. It checks neither the requesting...

PYSEC-2026-2699 Open WebUI Vulnerable to IDOR: Retrieval API Bypasses Knowledge Base Access Controls

IDOR: Retrieval API Bypasses Knowledge Base Access Controls Author: Andrew Orr Summary validatecollectionaccess PR 22109 checks the user-memory- and file- collection name prefixes but does not check knowledge base collections, which use raw UUIDs as collection names. Any authenticated user who...

PYSEC-2026-3069 Snorkel BaseLabeler.load uses an unsafe pickle.load

The snorkel library thru v0.10.0 contains a critical insecure deserialization vulnerability CWE-502 in the BaseLabeler.load method of the BaseLabeler class. The method loads serialized labeler models using the unsafe pickle.load function on user-supplied file paths without any validation or...

PYSEC-2026-2710 Open WebUI has Knowledge Base Destruction and RAG Poisoning via Unauthorized Collection Overwrite

Knowledge Base Destruction and RAG Poisoning via Unauthorized Collection Overwrite Affected Component Retrieval web/YouTube processing endpoints: - backend/openwebui/routers/retrieval.py lines 1810-1837, processweb - backend/openwebui/routers/retrieval.py the parallel processyoutube endpoint -...

PYSEC-2026-2719 Open WebUI's Base Model Routing Bypasses Access Control via Model Chaining

Base Model Routing Bypasses Access Control via Model Chaining Affected Component Model chaining via basemodelid: - backend/openwebui/routers/models.py lines 170-214, createnewmodel - backend/openwebui/routers/models.py lines 254-308, importmodels - backend/openwebui/main.py lines 1696-1711, base...

PYSEC-2026-2632 mcpo-simple-server has a Path Traversal issue

A weakness has been identified in getsimpletool mcpo-simple-server up to 0.2.0. Affected is the function deletesharedprompt of the file src/mcposimpleserver/services/promptmanager/basemanager.py. This manipulation of the argument detail causes relative path traversal. It is possible to initiate t...