CVE-2026-69263
HIGHFlowise < 3.1.3 - Unauthenticated MCP Blocklist Bypass Remote Code Execution
Title source: manualDescription
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.
References (4)
Core 4
Core References
X_Refsource_Confirm x_refsource_confirm
https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-xc48-889x-5qmw
X_Refsource_Misc x_refsource_misc
https://github.com/FlowiseAI/Flowise/pull/6471
X_Refsource_Misc x_refsource_misc
https://github.com/FlowiseAI/Flowise/commit/a4c4e4988cded15edf725e762560575b889ae351
X_Refsource_Misc x_refsource_misc
https://github.com/FlowiseAI/Flowise/releases/tag/[email protected]
Scores
CVSS v4
8.7
EPSS
0.0027
EPSS Percentile
18.7%
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
total
Details
CWE
CWE-184
Status
published
Products (3)
FlowiseAI/Flowise
< 3.1.3
npm/flowise
0 - 3.1.3npm
npm/flowise-components
0 - 3.1.3npm
Published
Aug 04, 2026
Tracked Since
Aug 04, 2026