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    CVE-2026-105396

    Heym before v0.0.112 contains a token leakage vulnerability in build_public_base_url() that allows unauthenticated attackers to redirect HITL review links by spoofing Origin or X-Forwarded-Host headers. Attackers can trigger anonymous workflows with forged headers so reviewer notifications point to attacker domains, capturing capability tokens to submit decisions executed with owner credentials.

    Published:Oct 5, 2026
    Last Modified:Oct 5, 2026
    EPS:Oct 5, 2026
    EPSS Score:
    CVSS Score:5.4

    Affected Products

    Vendor
    Heymrun
    Product
    Heym

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-346 Origin Validation Error

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    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