CVE-2026-9077

HIGH 8.5

Reliance on Untrusted Inputs in a Security Decision vulnerabilities in Model Context Protocol features

CVSS Score

8.5

EPSS Score

0.0%

EPSS Percentile

0th

IBM Langflow OSS 1.0.0 through 1.10.3 Langflow allows remote authenticated attackers to bypass localhost-only restrictions and write arbitrary MCP server configurations to IDE configuration files on the host system.

CWE	CWE-807
Vendor	ibm
Product	langflow oss
Published	Aug 5, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

Low

Integrity

High

Availability

None

Affected Versions

IBM / Langflow OSS

1.0.0 ≤ 1.10.3

References

NVD ↗ CVE.org ↗ EPSS Data ↗

ibm.com: https://www.ibm.com/support/pages/node/7282147

Credits

CVEs reported to IBM: CVE-2026-8446 by odgrso (GMO CyberSecurity by Ierae, Inc.); CVE-2026-17626 by Thai Son Dinh (VinSOC Labs, (R&D).