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TI-2026-58351 Aliases CVE-2026-84887GHSA-3j2w-rmqf-7fcr

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

Priority MEDIUM 57CWE-404Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · Low
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-404.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00566 47th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
simular-aiAgent-S0.3.0; 0.3.1; 0.3.2—No fix listedCNA
  • Agent-S Vendorsimular-ai Affected 0.3.0; 0.3.1; 0.3.2 Fixed in — No fix listed CNA

CPE names CNA · 1

CPEVersionsRoleVendor
cpe:2.3:a:simular-ai:agent-s:*:*:*:*:*:*:*:*———
  • cpe:2.3:a:simular-ai:agent-s:*:*:*:*:*:*:*:* Versions — — ·—

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-84887
  2. 2026-10-03 Alias added: GHSA-3j2w-rmqf-7fcr

References

Exploit 1

  • TI-2026-58350 simular-ai Agent-S OCR HTTP API ocr_server.py ImageData resource consumption CVSS 4.0MEDIUM 6.9
  • TI-2026-58349 simular-ai Agent-S CodeAgent code_agent.py denial of service CVSS 4.0MEDIUM 5.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences