CVE-2026-12763

4.2 mediumEPSS 0.2%

Medium (4.2). EPSS 0.2% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

4.2 medium

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

EPSS: 0.2% chance of exploitation in the next 30 days; higher than 8% of CVEs (scores of 2026-10-31)
CWE: CWE-306
Published: 2026-09-14
Modified: 2026-09-16
Record from: the NVD, synced 2026-10-19

References

https://www.ibm.com/support/pages/node/7286662

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