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    CVE-2026-91987

    atomic-agents-stack before 1.1.0 contains a cost-guardrail bypass in the _estimate_batch_cost function that returns zero cost for unknown models not in the pricing table. Attackers can configure deployments with unknown model identifiers to bypass daily cost caps and exceed budget limits in parallel batch operations.

    Published:Sep 15, 2026
    Last Modified:Sep 17, 2026
    EPS:Sep 15, 2026
    EPSS Score:0.0037
    CVSS Score:6.5

    Affected Products

    Vendor
    Dep0we
    Product
    Atomic-agents-stack

    Exploits

    No exploit reference

    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