NPM: Flowise: CVE-2025-8943 Patch Bypass: npm_config_yes bypasses MCP environment variable blocklist (Unauthenticated RCE)

NPM: Flowise: CVE-2025-8943 Patch Bypass: npmconfigyes bypasses MCP environment variable blocklist Unauthenticated RCE vulnerability discovered by ? in WordPress Npm flowise versions = 3.1.2...

Flowise: CVE-2025-8943 Patch Bypass: npm_config_yes bypasses MCP environment variable blocklist (Unauthenticated RCE)

Summary The mitigation shipped for CVE-2025-8943 blocks the -y and --yes flags on npx to stop auto-installation of arbitrary packages. That flag filter works. The environment-variable check in the same patch denies only four variable names by exact string match, and npm reads its configuration...

EUVD-2026-52795

Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.3, the mitigation for CVE-2025-8943 blocked -y and --yes flags on npx, but packages/components/nodes/tools/MCP/core.ts denied only PATH, LDLIBRARYPATH, DYLDLIBRARYPATH, and NODEOPTIONS by exact...

CVE-2025-8943

Flowise CVE-2025-8943 affects Flowise versions before 3.0.1. The vulnerability resides in the Custom MCPs feature, specifically the /api/v1/node-load-method/customMCP endpoint, where insufficient authentication/authorization allows unauthenticated network attackers to execute OS commands unsandbo...