Auth Bypass
277 entries
Every Auth Bypass entry VulnWatch has indexed, sorted by publication date.
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CVE-2026-44470: The Claude Desktop app gives you Claude Code with a graphical interface built for running multiple sessions side by side
The Claude Desktop app gives you Claude Code with a graphical interface built for running multiple sessions side by side. Prior to 1.3834.0, the CoworkVMService component in Claude Desktop for Windows...
Obot has an authorization bypass in /mcp-connect/{id} that allows any authenticated user to use any registered MCP server
## Summary If you have the MCP Server ID, you can connect to the MCP server even if you don't have permissions to the server. The MCP gateway endpoint `/mcp-connect/{mcp_id}` does not enforce Access...
CVE-2026-41614: Improper access control in M365 Copilot for Desktop allows an unauthorized attacker to perform spoofing locally.
Improper access control in M365 Copilot for Desktop allows an unauthorized attacker to perform spoofing locally.
CVE-2026-41100: Improper access control in M365 Copilot allows an authorized attacker to perform spoofing locally.
Improper access control in M365 Copilot allows an authorized attacker to perform spoofing locally.
CloudNativePG's metrics exporter allows privilege escalation to PostgreSQL superuser and OS RCE
### Impact The CloudNativePG metrics exporter opens its PostgreSQL connection as the `postgres` superuser via the pod-local Unix socket, then demotes the session with `SET ROLE pg_monitor`. `SET ROLE...
PraisonAI ships and generates a legacy API server with authentication disabled by default, allowing unauthenticated workflow execution
### Summary PraisonAI ships a legacy Flask API server with authentication disabled by default. When that server is used, any caller that can reach it can access `/agents` and trigger the configured `a...
CVE-2026-41495: n8n-MCP is an MCP server that provides AI assistants access to n8n node documentation, properties, and operations. Prior
n8n-MCP is an MCP server that provides AI assistants access to n8n node documentation, properties, and operations. Prior to version 2.47.11, when n8n-mcp runs in HTTP transport mode, incoming requests...
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/open_webui/retrieval/utils.py` (lines...
Open WebUI's Ollama Model Access Control Bypass via /api/generate, /api/embed, /api/embeddings, and /api/show
# Ollama Model Access Control Bypass via /api/generate, /api/embed, /api/embeddings, and /api/show ## Affected Component Ollama proxy endpoints missing model access control: - `backend/open_webui/ro...
Open WebUI's responses passthrough endpoint lacks access control authorization
## Summary The /responses endpoint in the OpenAI router accepts any authenticated user and forwards requests directly to upstream LLM providers without enforcing per-model access control. While the p...
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 `base_model_id`: - `backend/open_webui/routers/models.py` (lines 170-214, `create_new_model`)...
CVE-2026-41487: Langfuse is an open source large language model engineering platform. From version 3.68.0 to before version 3.167.0, the
Langfuse is an open source large language model engineering platform. From version 3.68.0 to before version 3.167.0, there is a role-based-access control flaw in the LLM connection update flow. An au...
opentelemetry-collector-contrib's azureauthextension Authenticate method does not validate bearer tokens, allowing auth bypass via replay
### Summary A server-side authentication bypass in `azureauthextension` allows any party who holds a single valid Azure access token for *any scope the collector's configured identity can mint for* t...
Nginx-UI Settings API Exposes Protected Secrets
### Summary The `GetSettings` API handler (`api/settings/settings.go:24-65`) serializes all settings structs to JSON and returns them to authenticated users. Many sensitive fields are tagged with `pro...
CVE-2026-41950: Dify before version 1.14.0 contains an authorization bypass vulnerability that allows authenticated users to read the fu
Dify before version 1.14.0 contains an authorization bypass vulnerability that allows authenticated users to read the full contents of files uploaded by other users within the same tenant by supplying...
Pelican Web UI Affected by a Privilege Escalation Attack
## Background On April 2nd, 2026, a Claude coding agent alerted Pelican PI Brian Bockelman to a privilege escalation vulnerability affecting Pelican's Web User Interface (WebUI) for various versions...
n8n Vulnerable to XSS via MCP OAuth client
## Impact An unauthenticated attacker could register a malicious MCP OAuth client with a crafted `client_name`. If a victim user authorized the OAuth consent dialog and a second user subsequently revo...
Microsoft Patches Entra ID Role Flaw That Enabled Service Principal Takeover
An administrative role meant for artificial intelligence (AI) agents within Microsoft Entra ID could enable privilege escalation and identity takeover attacks, according to new findings from Silverfor...
CVE-2026-41273: Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.0, Flowise contain
Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.0, Flowise contains an authentication bypass vulnerability that allows an unauthenticated attacker...
CVE-2026-41208: Paperclip is a Node.js server and React UI that orchestrates a team of AI agents to run a business. Versions of @papercl
Paperclip is a Node.js server and React UI that orchestrates a team of AI agents to run a business. Versions of @paperclipai/server prior to 2026.416.0 contain a privilege escalation vulnerability tha...
Claude Code: Insecure System-Wide Configuration Loading Enables Local Privilege Escalation on Windows
On Windows, Claude Code loaded system-wide default configuration from `C:\ProgramData\ClaudeCode\managed-settings.json` without validating directory ownership or access permissions. Because the `Progr...
Paperclip: Privilege Escalation via Agent-Controlled workspaceStrategy.provisionCommand Leading to OS Command Execution
### Summary Paperclip contains a privilege escalation vulnerability that allows an attacker with an Agent API key to execute arbitrary OS commands on the Paperclip server host. An attacker with an age...
Flowise: resetPassword Authentication Bypass Vulnerability
ZDI-CAN-28762: Flowise AccountService resetPassword Authentication Bypass Vulnerability -- ABSTRACT ------------------------------------- Trend Micro's Zero Day Initiative has identified a vulnerabi...
Expression Injection in OpenRemote
### Summary The OpenRemote IoT platform's rules engine contains two interrelated critical expression injection vulnerabilities that allow an attacker to execute arbitrary code on the server, ultimatel...
excel-mcp-server has a Path Traversal issue
## Summary A path traversal vulnerability exists in [`excel-mcp-server`](https://github.com/haris-musa/excel-mcp-server) versions up to and including `0.1.7`. When running in SSE or Streamable-HTTP t...