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 CowAgent 2.1.0 – —
TIMELINE Sep 1 Reserved by VulDB Sep 2 Published (CNA: VulDB) Sep 3 EXPLOIT PUBLISHED — CVE-2026-84427 (zhayujie CowAgent). Public exploit reference added.
A vulnerability was determined in zhayujie CowAgent up to 2.1.7. Affected is an unknown function of the file agent/tools/bash/bash.py of the component Bash Tool. Executing a manipulation can lead to denial of service. The attack can be launched remotely. The exploit has been publicly disclosed and may be utilized. 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 2, 2026 | Published | Published (CNA: VulDB) |
| September 3, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-84427 (zhayujie CowAgent). Public exploit reference added. |
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|---|---|---|---|
| zhayujie | CowAgent | — | 2.1.0 | — |
Authoritative record: CVE-2026-84427 at cve.org
Vendors: zhayujie
Weaknesses: CWE-404
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-84427 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.
