Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
AV AC AT PR UI VC VI VA CVSS EPSS %ile KEV N L N L N N N L 2.1 .0047 38.5 —
AFFECTED Product Versions Fixed hermes-agent 0.18.0 – —
TIMELINE Sep 1 Reserved by VulDB Sep 1 Published (CNA: VulDB) Sep 2 EXPLOIT PUBLISHED — CVE-2026-84288 (NousResearch hermes-agent). Public exploit reference added.
A vulnerability has been found in NousResearch hermes-agent up to 0.18.2. This affects the function HermesACPAgent.prompt of the file acp_adapter/session.py of the component ACP Prompt Workflow. Such manipulation leads to denial of service. The attack may be performed from remote. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
| Date | Event | Detail |
|---|---|---|
| September 1, 2026 | Reserved | Reserved by VulDB |
| September 1, 2026 | Published | Published (CNA: VulDB) |
| September 2, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-84288 (NousResearch hermes-agent). Public exploit reference added. |
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|---|---|---|---|
| NousResearch | hermes-agent | — | 0.18.0 | — |
Authoritative record: CVE-2026-84288 at cve.org
Vendors: nousresearch
Weaknesses: CWE-404
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-84288 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Sunday, October 4, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.
