CVE-2026-7664

EUVD-2026-38281
IBM Langflow OSS 1.0.0 through 1.8.4 could allow unauthenticated attackers to access protected MCP project resources and execute MCP operations due to improper authorization enforcement in the Streamable MCP transport endpoint.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
9.8 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 40.02%
Affected Products (NVD)
VendorProductVersion
langflowlangflow
1.0.0 ≤
𝑥
≤ 1.8.4
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://www.ibm.com/support/pages/node/7277243