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    CVE-2026-7663

    IBM Langflow OSS 1.0.0 through 1.9.6 could allow unauthenticated attackers to access protected MCP project resources and execute MCP operations due to improper authorization enforcement in the Streamable MCP transport endpoint.

    Published:Jun 30, 2026
    Last Modified:Jun 30, 2026
    EPS:Jun 30, 2026
    EPSS Score:
    CVSS Score:9.1

    Affected Products

    Vendor
    Ibm
    Product
    Langflow Oss

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-285 Improper Authorization

    Related CVEs

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    CVE-2026-78575 (CVSS 8.8) — IBM Langflow OSS 1.0.0 through 1.11.5 could allow a remote authenticated attacker to execute arbitrary command…
    CVE-2026-79723 (CVSS 5) — IBM Langflow OSS 1.0.0 through 1.11.5 could allow a remote authenticated attacker to obtain sensitive informat…
    CVE-2026-79724 (CVSS 9.8) — IBM Langflow OSS 1.0.0 through 1.11.5 could allow a remote attacker to execute arbitrary OS commands due to im…
    CVE-2026-79725 (CVSS 6.5) — IBM Langflow OSS 1.0.0 through 1.11.5 could allow a remote authenticated attacker to read arbitrary files due …
    CVE-2026-79742 (CVSS 8.8) — IBM Langflow OSS 1.0.0 through 1.11.5 could allow a remote authenticated attacker to execute arbitrary code du…
    CVE-2026-81204 (CVSS 9.8) — IBM Langflow OSS 1.0.0 through 1.11.5 could allow a remote attacker to execute arbitrary code due to code inje…
    CVE-2026-81211 (CVSS 8.8) — IBM Langflow OSS 1.0.0 through 1.11.5 could allow a remote authenticated attacker to execute arbitrary Python …

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High