CVE-2026-90938

LangBot (pip package langbot_plugin) through 0.4.17 exposes a debug WebSocket server on 0.0.0.0:5401 (/plugin/ws) whose authentication depends on plugin_debug_key, which defaults to an empty string and is never set by the upstream repository, Docker image, or docker-compose. Because docker-compos...

CVE-2026-90938 LangBot through 0.4.17 Unauthenticated Plugin Registration via WebSocket

LangBot's plugin runtime pip package langbotplugin through 0.4.17 starts a debug WebSocket server on 0.0.0.0:5401 /plugin/ws whose authentication is gated on plugindebugkey, which defaults to an empty string and is never set by the upstream repository, Docker image, or docker-compose which...

PT-2026-91214

LangBot's plugin runtime pip package langbot plugin through 0.4.17 starts a debug WebSocket server on 0.0.0.0:5401 /plugin/ws whose authentication is gated on plugin debug key, which defaults to an empty string and is never set by the upstream repository, Docker image, or docker-compose which...

CVE-2026-90562

LangBot before 4.10.11 generates password recovery keys with only 24 bits of entropy and applies no rate limiting to the unauthenticated reset-password endpoint. Remote attackers knowing the administrator email can exhaust the keyspace through concurrent requests to reset the admin password and...

EUVD-2026-76987

LangBot before 4.10.11 generates password recovery keys with only 24 bits of entropy and applies no rate limiting to the unauthenticated reset-password endpoint. Remote attackers knowing the administrator email can exhaust the keyspace through concurrent requests to reset the admin password and...

CVE-2026-90562

LangBot before 4.10.11 is vulnerable to authentication bypass via a weak password recovery key mechanism. The application generates recovery keys with only 24 bits of entropy and applies no rate limiting to the unauthenticated reset-password endpoint. A remote attacker who knows the administrator...

CVE-2026-90562 LangBot before 4.10.11 Authentication Bypass via Weak Recovery Key

LangBot before 4.10.11 generates password recovery keys with only 24 bits of entropy and applies no rate limiting to the unauthenticated reset-password endpoint. Remote attackers knowing the administrator email can exhaust the keyspace through concurrent requests to reset the admin password and...

CVE-2026-90562 LangBot before 4.10.11 Authentication Bypass via Weak Recovery Key

LangBot before 4.10.11 generates password recovery keys with only 24 bits of entropy and applies no rate limiting to the unauthenticated reset-password endpoint. Remote attackers knowing the administrator email can exhaust the keyspace through concurrent requests to reset the admin password and...

PT-2026-90833

CVE-2026-90562 isn't a prompt injection zero-day. it's a password reset bug straight out of the OWASP Top 10 circa 2005, wearing an "agentic AI" badge. LangBot orchestrates LLM agents across Discord, Telegram, Slack bridges. the CVE lets an attacker hit the password reset endpoint and walk straig...

CVE-2026-54449

LangBot is a global IM bot platform designed for LLMs. In version 4.10.7 and earlier, any authenticated user can add or change an STDIO MCP server configuration without an adequate authorization boundary. In src/langbot/pkg/provider/tools/loaders/mcp.py, StdioServerParameters accepts the configur...

CVE-2026-54449 LangBot: Authenticated RCE Via MCP Configuration

LangBot is a global IM bot platform designed for LLMs. In version 4.10.7 and earlier, any authenticated user can add or change an STDIO MCP server configuration without an adequate authorization boundary. In src/langbot/pkg/provider/tools/loaders/mcp.py, StdioServerParameters accepts the configur...

CVE-2026-54449

In LangBot 4.10.7 and earlier, StdioServerParameters in src/langbot/pkg/provider/tools/loaders/mcp.py runs attacker-supplied commands as a server-side subprocess without authorization checks (CWE-78). Any authenticated user can add an arbitrary command via the Extensions MCP tab, achieving full R...

EUVD-2026-63480

LangBot is a global IM bot platform designed for LLMs. In version 4.10.7 and earlier, any authenticated user can add or change an STDIO MCP server configuration without an adequate authorization boundary. In src/langbot/pkg/provider/tools/loaders/mcp.py, StdioServerParameters accepts the configur...

CVE-2026-54449 LangBot: Authenticated RCE Via MCP Configuration

LangBot is a global IM bot platform designed for LLMs. In version 4.10.7 and earlier, any authenticated user can add or change an STDIO MCP server configuration without an adequate authorization boundary. In src/langbot/pkg/provider/tools/loaders/mcp.py, StdioServerParameters accepts the configur...

PYSEC-2026-3473 LangBot: Authenticated RCE Via MCP Configuration

Summary Any authenticated user can achieve arbitrary command execution on the LangBot servers through changing the MCP Server Configuration by added an "STDIO" MCP with an arbitrary command. Details The repository uses StdioServerParameters which is based on Anthropic's modelcontextprotocol open...

GHSA-3PVH-63GF-J9MW LangBot: Authenticated RCE Via MCP Configuration

Summary Any authenticated user can achieve arbitrary command execution on the LangBot servers through changing the MCP Server Configuration by added an "STDIO" MCP with an arbitrary command. Details The repository uses StdioServerParameters which is based on Anthropic's modelcontextprotocol open...

LangBot: Authenticated RCE Via MCP Configuration

Summary Any authenticated user can achieve arbitrary command execution on the LangBot servers through changing the MCP Server Configuration by added an "STDIO" MCP with an arbitrary command. Details The repository uses StdioServerParameters which is based on Anthropic's modelcontextprotocol open...

Arbitrary Command Injection

Overview langbot is an Easy-to-use global IM bot platform designed for LLM era Affected versions of this package are vulnerable to Arbitrary Command Injection via the MCP configuration process. An attacker can execute arbitrary commands on the server by submitting specially crafted input to the...

PT-2026-49607

Name of the Vulnerable Software and Affected Versions LangBot versions 4.10.7 and earlier Description Authenticated users can execute arbitrary commands on the server with the privileges of the LangBot service due to an inadequate authorization boundary when adding or changing an STDIO MCP server...

Anthropic MCP Design Vulnerability Enables RCE, Threatening AI Supply Chain

Cybersecurity researchers have discovered a critical "by design" weakness in the Model Context Protocol's MCP architecture that could pave the way for remote code execution and have a cascading effect on the artificial intelligence AI supply chain. "This flaw enables Arbitrary Command Execution R...