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CVE-2026-84887— simular-ai Agent-S Model-generated GUI Action Execution Workflow grounding.py denial of service

Quick assessment

Affected
simular-ai Agent-S
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.

在 simular-ai Agent-S（版本 0.3.2 及以下）中发现了一个安全漏洞。 受此问题影响的是组件“模型生成的 GUI 动作执行工作流”中文件 中某个未明确说明的功能。攻击者可通过操作该功能导致服务中断（拒绝服务，DoS）。该漏洞可被远程利用。利用代码（Exploit）已公开，且可能被实际使用。研究方曾提前联系供应商披露此事，但供应商未作任何回应。

CVSS 4.3 · Medium
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I. Basic Information for CVE-2026-84887

Vulnerability Information
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Vulnerability Title
simular-ai Agent-S Model-generated GUI Action Execution Workflow grounding.py denial of service
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was identified in simular-ai Agent-S up to 0.3.2. Affected by this issue is some unknown functionality of the file grounding.py of the component Model-generated GUI Action Execution Workflow. The manipulation leads to denial of service. Remote exploitation of the attack is possible. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.
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:L
Source: CVE Program / CVE List V5
Vulnerability Type
不恰当的资源关闭或释放
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
simular-ai Agent-S 0.3.0 cpe:2.3:a:simular-ai:agent-s:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-84887

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III. Intelligence Information for CVE-2026-84887

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Vendor Advisories for CVE-2026-84887 (1)

Other References for CVE-2026-84887 (3)

Same Patch Batch · simular-ai · 2026-09-02 · 3 CVEs total

CVE-2026-84886 5.3 MEDIUM simular-ai Agent-S OCR HTTP API ocr_server.py ImageData resource consumption
CVE-2026-84885 4.3 MEDIUM simular-ai Agent-S CodeAgent code_agent.py denial of service

IV. Related Vulnerabilities

Same product: Agent-S
Same vendor: simular-ai
Same weakness: CWE-404

V. Comments for CVE-2026-84887

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