CVE-2026-84887

MEDIUM 4.3

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

CVSS Score

4.3

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-404
Vendor	simular-ai
Product	agent-s
Published	Sep 2, 2026
Last Updated	Sep 3, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

simular-ai / Agent-S

0.3.0 0.3.1 0.3.2

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/vuln/398136 vuldb.com: https://vuldb.com/vuln/398136/cti vuldb.com: https://vuldb.com/cve/CVE-2026-84887 vuldb.com: https://vuldb.com/submit/886451 github.com: https://github.com/outlookgp/CVE/tree/main/AgentS_Action_Parameter_Budget_DoS_Report

Credits

🔍 outlookgp (VulDB User) VulDB CNA Team