CVE-2026-91987
CVE-2026-91987 · atomic-agents-stack before 1.1.0 Cost Guardrail Bypass via Unknown Model
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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 7.1 · High · EPSS 0.5% · Fix available
- Published
- Updated
Stack: python
Affected products and versions
atomic-agents-stack
- Versions
- ≥ 0, < 1.1.0: Affected (semver)
- 1.1.0: Not affected (semver)
Update to 1.1.0
atomic-agents-stack PyPI
- Versions
- 1.0.0
- Affected ranges
- ECOSYSTEM: < 1.1.0
Update to 1.1.0