Flowise: CVE-2025-8943 Patch Bypass: npm_config_yes bypasses MCP environment variable blocklist (Unauthenticated RCE)
Description
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, LD_LIBRARY_PATH, DYLD_LIBRARY_PATH, and NODE_OPTIONS by exact environment-variable name. Because npm reads configuration from npm_config_* variables, setting npm_config_yes=true reproduced --yes behavior without using a blocked flag, causing npx to auto-install and execute the named package when a Custom MCP server launched. This issue is fixed in version 3.1.3.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
flowisenpm | < 3.1.3 | 3.1.3 |
flowise-componentsnpm | < 3.1.3 | 3.1.3 |
Affected products
1Patches
Vulnerability mechanics
References
5- github.com/advisories/GHSA-xc48-889x-5qmwghsaADVISORY
- github.com/FlowiseAI/Flowise/commit/a4c4e4988cded15edf725e762560575b889ae351ghsax_refsource_MISCWEB
- github.com/FlowiseAI/Flowise/pull/6471ghsax_refsource_MISCWEB
- github.com/FlowiseAI/Flowise/releases/tag/[email protected]ghsax_refsource_MISCWEB
- github.com/FlowiseAI/Flowise/security/advisories/GHSA-xc48-889x-5qmwghsax_refsource_CONFIRMWEB
News mentions
0No linked articles in our index yet.