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    CVE-2026-107366

    IBM Langflow OSS 1.0.0 through 1.12.4 contains three message endpoints that perform no ownership verification. Any authenticated user can bulk-delete another user's messages, overwrite message content to inject malicious prompts, or hijack an entire conversation session by reassigning its session ID.

    Published:Oct 19, 2026
    Last Modified:Oct 20, 2026
    EPS:Oct 19, 2026
    EPSS Score:0.00219
    CVSS Score:8.3

    Affected Products

    Vendor
    Ibm
    Product
    Langflow Oss

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2026-18894 (CVSS 6.5) — IBM Langflow OSS 1.0.0 through 1.12.4 could allow a remote attacker to trigger pre-existing stored Python comp…
    CVE-2026-77817 (CVSS 6.5) — IBM Langflow OSS 1.0.0 through 1.12.4 could allow a remote authenticated attacker to obtain sensitive informat…
    CVE-2026-77819 (CVSS 6.5) — IBM Langflow OSS 1.0.0 through 1.12.3 could allow a remote authenticated attacker to overwrite arbitrary files…
    CVE-2026-90991 (CVSS 6.5) — IBM Langflow OSS 1.0.0 through 1.12.4 could allow a remote authenticated attacker to cause a denial of service…
    CVE-2026-93680 (CVSS 9.8) — IBM Langflow OSS 1.0.0 through 1.12.8 could allow a remote attacker to bypass security restrictions due to imp…
    CVE-2026-102590 (CVSS 5) — IBM Langflow OSS 1.0.0 through 1.12.3 could allow a remote authenticated attacker to obtain sensitive informat…
    CVE-2026-103092 (CVSS 8.5) — IBM Langflow OSS 1.0.0 through 1.12.3 could allow a remote authenticated attacker to execute arbitrary SQL com…
    CVE-2026-101288 (CVSS 8.8) — IBM Langflow OSS 1.0.0 through 1.12.3 could allow a remote authenticated attacker to execute arbitrary code du…
    CVE-2026-104308 (CVSS 4.3) — IBM Langflow OSS 1.0.0 through 1.12.3 could allow a remote authenticated attacker to cause a denial of service…
    CVE-2026-104309 (CVSS 6.5) — IBM Langflow OSS 1.0.0 through 1.12.3 could allow a remote authenticated attacker to obtain sensitive informat…

    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