CVE-2026-55640 Nextcloud MCP Server: Unauthenticated `POST /webhooks/nextcloud` allows arbitrary vector data deletion when `WEBHOOK_SECRET` is unset ( default )

Nextcloud MCP Server is a production-ready MCP server that connects AI assistants to a Nextcloud instance. Prior to 0.117.2, the POST /webhooks/nextcloud endpoint in nextcloudmcpserver/vector/webhookreceiver.py has no authentication by default because WEBHOOKSECRET defaults to None and startup...

CVE-2026-55640 Nextcloud MCP Server: Unauthenticated `POST /webhooks/nextcloud` allows arbitrary vector data deletion when `WEBHOOK_SECRET` is unset ( default )

Nextcloud MCP Server is a production-ready MCP server that connects AI assistants to a Nextcloud instance. Prior to 0.117.2, the POST /webhooks/nextcloud endpoint in nextcloudmcpserver/vector/webhookreceiver.py has no authentication by default because WEBHOOKSECRET defaults to None and startup...

EUVD-2026-65596

Nextcloud MCP Server is a production-ready MCP server that connects AI assistants to a Nextcloud instance. Prior to 0.117.2, the POST /webhooks/nextcloud endpoint in nextcloudmcpserver/vector/webhookreceiver.py has no authentication by default because WEBHOOKSECRET defaults to None and startup...

CVE-2026-55640

Nextcloud MCP Server prior to 0.117.2 contains an authentication bypass in the POST /webhooks/nextcloud endpoint. The WEBHOOK_SECRET defaults to None and startup validation does not enforce it, allowing unauthenticated requests to handle_nextcloud_webhook(). The payload["user"]["uid"] field is at...

CVE-2026-55581 mcp-shell: Secure Mode Allowlist Bypass via Default `/bin/bash` Executable

mcp-shell is an MCP server for running shell commands securely, auditably, and on demand. Prior to 0.6.0, the default Docker security.yaml includes /bin/bash in allowedexecutables, while security.go validates only the first token and checkBlockedPatternsAndCommands does not reject the shell...

CVE-2026-55532 PraisonAI: Origin-validation bypass (startswith prefix match) enables unauthenticated cross-site request forgery against the PraisonAI MCP HTTP server

PraisonAI is a multi-agent teams system. Prior to praisonai 4.6.58, MCP HTTP Stream validateorigin uses requestorigin.startswithallowed, allowing the attacker-controlled localhost.attacker.com HTTP origin to satisfy the localhost allowlist. A webpage can send Content-Type: text/plain requests...

PT-2026-81391

Name of the Vulnerable Software and Affected Versions Nextcloud MCP Server versions prior to 0.117.2 Description The POST /webhooks/nextcloud endpoint lacks authentication by default because the WEBHOOK SECRET variable defaults to None and is not required during startup validation. When this secr...

PT-2026-81115

Commit: f855e54d5b7bc1c91b977574a03b91eff6b86bb6 Component: mcp-servers/python/python sandbox server/src/python sandbox server/server fastmcp.py Vulnerability RestrictedPython's sandbox in ContextForge's python sandbox server sub-project allows arbitrary Python execution via three compounding...

Exploit for CVE-2026-52617

CVE-2026-52617 — @sworddut/mcp-ffmpeg-helper: OS command injec...

CVE-2026-53509

CKAN MCP Server is a tool for querying CKAN open data portals. A known vulnerability CVE-2026-33060 indicated tools including ckanpackagesearch and sparqlquery that accept a baseurl parameter had the risk of making HTTP requests to arbitrary endpoints without restriction. A fix was applied to...

CVE-2026-53509 @aborruso/ckan-mcp-server: SSRF via base_url allows access to internal networks (Potential fix bypass of CVE-2026-33060)

CKAN MCP Server is a tool for querying CKAN open data portals. A known vulnerability CVE-2026-33060 indicated tools including ckanpackagesearch and sparqlquery that accept a baseurl parameter had the risk of making HTTP requests to arbitrary endpoints without restriction. A fix was applied to...

CVE-2026-53509 @aborruso/ckan-mcp-server: SSRF via base_url allows access to internal networks (Potential fix bypass of CVE-2026-33060)

CKAN MCP Server is a tool for querying CKAN open data portals. A known vulnerability CVE-2026-33060 indicated tools including ckanpackagesearch and sparqlquery that accept a baseurl parameter had the risk of making HTTP requests to arbitrary endpoints without restriction. A fix was applied to...

CVE-2026-53509

@aborruso/ckan-mcp-server (an MCP server for querying CKAN open data portals) is vulnerable to SSRF prior to version 0.4.106 . The validateServerUrl hostname check in src/utils/http.ts only blocked the literal string localhost, but hostname aliases such as ip6-localhost and ip6-loopback (defined ...

CVE-2026-53509 @aborruso/ckan-mcp-server: SSRF via base_url allows access to internal networks (Potential fix bypass of CVE-2026-33060)

CKAN MCP Server is a tool for querying CKAN open data portals. A known vulnerability CVE-2026-33060 indicated tools including ckanpackagesearch and sparqlquery that accept a baseurl parameter had the risk of making HTTP requests to arbitrary endpoints without restriction. A fix was applied to...

CVE-2026-62316

Microsoft UFO open-source framework for intelligent automation across devices and platforms. Prior to 3.0.8, ufo/client/mcp/httpservers/linuxmcpserver.py binds a FastMCP streamable HTTP server to localhost:8010 but does not validate the Host, Origin, or Sec-Fetch-Site headers. An...

CVE-2026-62674

Omnigent is an open-source AI agent framework and meta-harness for orchestrating coding agents. Prior to 0.3.0, PUT /sessions/sessionid/agent checks LEVELEDIT permission for a session but does not reject a bound shared or template agent whose agent.sessionid is None. An authenticated user with ed...

CVE-2026-62674 Omnigent: Shared Agent Bundle Overwrite Leads to Authenticated Runner RCE

Omnigent is an open-source AI agent framework and meta-harness for orchestrating coding agents. Prior to 0.3.0, PUT /sessions/sessionid/agent checks LEVELEDIT permission for a session but does not reject a bound shared or template agent whose agent.sessionid is None. An authenticated user with ed...

CVE-2026-62674 Omnigent: Shared Agent Bundle Overwrite Leads to Authenticated Runner RCE

Omnigent is an open-source AI agent framework and meta-harness for orchestrating coding agents. Prior to 0.3.0, PUT /sessions/sessionid/agent checks LEVELEDIT permission for a session but does not reject a bound shared or template agent whose agent.sessionid is None. An authenticated user with ed...

CVE-2026-62674

Omnigent (open-source AI agent framework) prior to 0.3.0 is vulnerable to an authenticated Remote Code Execution via the PUT /sessions/{session_id}/agent endpoint. The endpoint validates LEVEL_EDIT permission for the session but fails to reject a bound shared or template agent whose agent.session...

PT-2026-79411

Name of the Vulnerable Software and Affected Versions Omnigent versions prior to 0.3.0 Description An authenticated user with edit access to a session can replace a shared agent bundle because the system fails to reject bound shared or template agents where the agent.session id is None. By...