Medium 4.3Published Sep 2, 2026

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

Updated under an hour ago (2026-10-19 13:10 UTC)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for simular-ai Agent-S

Exploited in the last 30 days

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.

CVSS: 4.3 MEDIUM (v3.1, CNA)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
Weakness (CWE): CWE-404
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulDB
NVD analysis: Deferred
Record last updated: Sep 3, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

simular-ai Agent-S simular-ai:agent-s	0.3.0; 0.3.1; 0.3.2	CNA record

References

https://vuldb.com/vuln/398136vdb-entry
https://vuldb.com/vuln/398136/ctisignature, permissions-required
https://vuldb.com/cve/CVE-2026-84887third-party-advisory
https://vuldb.com/submit/886451third-party-advisory
https://github.com/outlookgp/CVE/tree/main/AgentS_Action_Parameter_Budget_DoS_Reportexploit

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.