CVE-2026-12763: IBM Langflow OSS vulnerability

Published Aug 28, 2026
·
Updated

Langflow OSS could allow an authenticated attacker to access another user's MCP server context due to improper cache key isolation in the MCP Tools component

Affected Software

1 affected component
IBM Langflow OSS<=1.0.0-1.11.2

Event History

Aug 28, 2026
CVE Published
via IBM·12:00 AM
Data Sourced
via IBM·12:00 AM
DescriptionAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Frequently Asked Questions

1

Which deployments should be prioritized for review?

Prioritize IBM Langflow OSS deployments that use the MCP Tools component, where cache key isolation can allow access across user MCP server contexts.

2

What access does an attacker need to exploit this issue?

The attacker must be authenticated to Langflow OSS.

Company

Resources

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