Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1336 CNY

100%
Buy Us a Coffee

CVE-2026-91987— atomic-agents-stack before 1.1.0 Cost Guardrail Bypass via Unknown Model

Quick assessment

Affected
dep0we atomic-agents-stack
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

漏洞描述（中文翻译）： 在 1.1.0 版本之前存在成本护栏绕过漏洞。具体表现为： 函数对于不在定价表中的未知模型，其计算出的成本值为零。攻击者可以通过在并行批处理操作中部署使用未知模型标识符的配置，从而绕过每日成本上限，导致实际支出超出预算限制。

CVSS 6.5 · Medium

Affected Version Matrix 2

VendorProduct Version RangeStatus
dep0we atomic-agents-stack < 1.1.0 affected
1.1.0 unaffected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-91987

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
atomic-agents-stack before 1.1.0 Cost Guardrail Bypass via Unknown Model
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
不加限制或调节的资源分配
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
dep0we atomic-agents-stack 0 ~ 1.1.0 -

II. Public POCs for CVE-2026-91987

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-91987

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-91987 (2)

Same Patch Batch · dep0we · 2026-09-15 · 3 CVEs total

CVE-2026-91988 8.1 HIGH atomic-agents-stack before 1.1.0 Remote Code Execution via HTTP MCP
CVE-2026-91989 7.5 HIGH atomic-agents-stack before 1.1.0 Path Traversal via dashboard serve.py

IV. Related Vulnerabilities

Same product: atomic-agents-stack
Same vendor: dep0we
Same weakness: CWE-770

V. Comments for CVE-2026-91987

No comments yet

Leave a comment