What is CVE-2026-91987?

CVE-2026-91987 is a medium-severity vulnerability in Dep0we Atomic-Agents-Stack, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 6.5/10. Published 2026-09-15.

How severe is CVE-2026-91987?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Resource exhaustion in Dep0we Atomic-Agents-Stack

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.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Affected products

Dep0we Atomic-agents-stack

Weakness classification (CWE)

CWE-770 — Allocation of Resources Without Limits or Throttling

References

disclosure@vulncheck.com (vendor-advisory)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-91987?: CVE-2026-91987 is a medium-severity vulnerability in Dep0we Atomic-Agents-Stack, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 6.5/10. Published 2026-09-15.
How severe is CVE-2026-91987?: Medium severity. CVSS v3 base score is 6.5 out of 10.