@arikusi/deepseek-mcp-server has an Authorization Bypass Through User-Controlled Key

Cross-Session Data Exposure via Caller-Controlled sessionid Project / Repository: arikusi/deepseek-mcp-server Affected version / commit tested: 1.6.0 / 04f28be2c6e99d3d4e443a6ae37cc35f0a71554a Vulnerability type: Authorization bypass / cross-session data exposure Authentication required: No Summa...

GHSA-FH3R-G96V-F578 @arikusi/deepseek-mcp-server has an Authorization Bypass Through User-Controlled Key

Cross-Session Data Exposure via Caller-Controlled sessionid Project / Repository: arikusi/deepseek-mcp-server Affected version / commit tested: 1.6.0 / 04f28be2c6e99d3d4e443a6ae37cc35f0a71554a Vulnerability type: Authorization bypass / cross-session data exposure Authentication required: No Summa...

CVE-2026-55609 sublinear-time-solver: Arbitrary file write in consciousness-explorer / sublinear-time-solver MCP export_state

sublinear-time-solver is a Rust and WebAssembly library for solving asymmetric diagonally dominant systems in sublinear time. Prior to consciousness-explorer 1.1.2 and sublinear-time-solver 1.6.0, the exportstate and importstate tools in src/consciousness-explorer/mcp/server.js pass the...

CVE-2026-55609

sublinear-time-solver is a Rust and WebAssembly library for solving asymmetric diagonally dominant systems in sublinear time. The vulnerability is a path traversal in the MCP server tools: export_state and import_state (in src/consciousness-explorer/mcp/server.js) and saveVectorToFile / loadVecto...

CVE-2026-55609 sublinear-time-solver: Arbitrary file write in consciousness-explorer / sublinear-time-solver MCP export_state

sublinear-time-solver is a Rust and WebAssembly library for solving asymmetric diagonally dominant systems in sublinear time. Prior to consciousness-explorer 1.1.2 and sublinear-time-solver 1.6.0, the exportstate and importstate tools in src/consciousness-explorer/mcp/server.js pass the...

CVE-2026-55640

creationtimestamp| type| source ---|---|--- 2026-08-25 18:08:31+00:00| seen| https://bsky.app/profile/stemshop.bsky.social/post/3mtwfys2tk52p 2026-08-25 18:35:19+00:00| published-proof-of-concept| https://github.com/cbcoutinho/nextcloud-mcp-server/security/advisories/GHSA-8vh3-g2qg-2h2c 2026-08-2...

CVE-2026-55557

browse-mcp is a Playwright-based headless-browser MCP server for MCP-capable agents. Prior to 0.8.2, browserdownload writes a fetched response body to joinsavedir, filename without validating the caller-controlled savedir, while browsersavestate and browserloadstate honor a caller-controlled path...

GHSA-M9MQ-7M7Q-XC6P browse-mcp has an arbitrary file write via unconfined download and state paths

Impact browserdownload wrote a fetched file to joinsavedir, filename with no validation of savedir, and browsersavestate / browserloadstate honored an explicit path unchanged. The MCP caller controls these arguments a malicious MCP client, or an autonomous agent steered by indirect prompt injecti...

browse-mcp has an arbitrary file write via unconfined download and state paths

Impact browserdownload wrote a fetched file to joinsavedir, filename with no validation of savedir, and browsersavestate / browserloadstate honored an explicit path unchanged. The MCP caller controls these arguments a malicious MCP client, or an autonomous agent steered by indirect prompt injecti...

CVE-2026-55557 browse-mcp: Arbitrary file write via unconfined download and state paths

browse-mcp is a Playwright-based headless-browser MCP server for MCP-capable agents. Prior to 0.8.2, browserdownload writes a fetched response body to joinsavedir, filename without validating the caller-controlled savedir, while browsersavestate and browserloadstate honor a caller-controlled path...

CVE-2026-55557

browse-mcp is a Playwright-based headless-browser MCP server for MCP-capable agents. Prior to 0.8.2 , the browser_download function writes a fetched response body to join(save_dir, filename) without validating the caller-controlled save_dir, and browser_save_state / browser_load_state honor a cal...

CVE-2026-55557 browse-mcp: Arbitrary file write via unconfined download and state paths

browse-mcp is a Playwright-based headless-browser MCP server for MCP-capable agents. Prior to 0.8.2, browserdownload writes a fetched response body to joinsavedir, filename without validating the caller-controlled savedir, while browsersavestate and browserloadstate honor a caller-controlled path...

EUVD-2026-65581

browse-mcp is a Playwright-based headless-browser MCP server for MCP-capable agents. Prior to 0.8.2, browserdownload writes a fetched response body to joinsavedir, filename without validating the caller-controlled savedir, while browsersavestate and browserloadstate honor a caller-controlled path...

CVE-2026-55557 browse-mcp: Arbitrary file write via unconfined download and state paths

browse-mcp is a Playwright-based headless-browser MCP server for MCP-capable agents. Prior to 0.8.2, browserdownload writes a fetched response body to joinsavedir, filename without validating the caller-controlled savedir, while browsersavestate and browserloadstate honor a caller-controlled path...

CVE-2026-55640

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-2026-55580

mcp-shell is an MCP server for running shell commands securely, auditably, and on demand. Prior to 0.6.0, config.go initializes Security.Enabled to false, and when MCPSHELLSECCONFIGFILE is unset, main.go starts the documented bare-binary deployment without a security policy...

nextcloud-mcp-server: Unauthenticated `POST /webhooks/nextcloud` allows arbitrary vector data deletion when `WEBHOOK_SECRET` is unset ( default )

Summary The POST /webhooks/nextcloud endpoint has no authentication by default: WEBHOOKSECRET defaults to None and is never required by startup validation. When unset, the receiver accepts any unauthenticated POST. The userid is taken directly from the attacker-supplied payload and passed to...

GHSA-8VH3-G2QG-2H2C nextcloud-mcp-server: Unauthenticated `POST /webhooks/nextcloud` allows arbitrary vector data deletion when `WEBHOOK_SECRET` is unset ( default )

Summary The POST /webhooks/nextcloud endpoint has no authentication by default: WEBHOOKSECRET defaults to None and is never required by startup validation. When unset, the receiver accepts any unauthenticated POST. The userid is taken directly from the attacker-supplied payload and passed to...

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...