CVE-2026-12763
mediumIBM 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…
Vendor / product: Langflow — langflow
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.
CVSS
4.2
4.2 (CVSS v3.1)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N Severity source: NVD CVSS v3.1 (psirt@us.ibm.com)
Timeline (UTC)
Published: 2026-09-14 21:17
Modified: 2026-11-03 18:27
NVD status: Analyzed
Last synced 1 day ago
Verified against the source API 2026-11-03 18:50 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
langflow / langflow ≥1.0.0 <1.11.6
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Vendor advisory: https://www.ibm.com/support/pages/node/7286662
Patch / mitigation: https://www.ibm.com/support/pages/node/7286662
References
- https://www.ibm.com/support/pages/node/7286662 psirt@us.ibm.com
Data sources
NVD CVE API 2.0 — fetched 2026-11-03 18:50 UTC · record ↗