CVE-2026-12763: IBM Langflow OSS 1.0.0 through 1.11.5 could allow an authenticated attacker to access another user's MCP server context due to improper cache key isolation in…

PriorityP421medium4.2CVSS 3.1

AVNACHPRLUINSUCLILAN

EPSS

0.15%

3.5th percentile

IBM Langflow OSS 1.0.0 through 1.11.5 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

1 ranges

Vendor	Product	Version range	Fixed in
ibm	langflow_oss	1.0.0 – 1.11.5	—

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