Description
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: 2026-09-15
Score: 7.1 High
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Tue, 15 Sep 2026 15:30:00 +0000

Type Values Removed Values Added
Description 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.
Title atomic-agents-stack before 1.1.0 Cost Guardrail Bypass via Unknown Model
Weaknesses CWE-770
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 7.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}

Subscriptions

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-09-15T15:18:29.633Z

Reserved: 2026-09-15T11:10:41.354Z

Link: CVE-2026-91987

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-15T16:17:57.300

Modified: 2026-09-15T16:17:57.300

Link: CVE-2026-91987

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses