CVE-2026-84887
CVE-2026-84887
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.006 (45.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 46th percentile — 45.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.006 · change: +0.002
Weakness classification (CWE)
References
- github.com/outlookgp/CVE/tree/main/AgentS_Action_Parameter_Budget_DoS_Report (exploit)
- vuldb.com/cve/CVE-2026-84887 (third-party-advisory)
- vuldb.com/submit/886451 (third-party-advisory)
- vuldb.com/vuln/398136 (vdb-entry)
- vuldb.com/vuln/398136/cti (signature, permissions-required)
Frequently asked questions
- What is CVE-2026-84887?
- CVE-2026-84887 is a medium-severity vulnerability, classified under Improper Resource Shutdown or Release. CVSS score: 4.3/10. Published 2026-09-03.
- How severe is CVE-2026-84887?
- Medium severity. CVSS v3 base score is 4.3 out of 10.