Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
HKUDS nanobot Shell Allowlist shell.py ExecTool._spawn os command injection
AV AC AT PR UI VC VI VA CVSS EPSS %ile KEV
N L N L N L L L 2.1 .0161 74.0 —
AFFECTED
Product Versions Fixed
nanobot 0.2.0 – 0.3.0
TIMELINE
Aug 7 Reserved by VulDB
Aug 7 Published (CNA: VulDB)
Aug 10 EXPLOIT PUBLISHED — CVE-2026-19243 (HKUDS nanobot). Public exploit reference added.
Description
A security vulnerability has been detected in HKUDS nanobot up to 0.2.1. Impacted is the function ExecTool._guard_command/ExecTool._spawn of the file nanobot/agent/tools/shell.py of the component Shell Allowlist Handler. Such manipulation leads to os command injection. The attack can be executed remotely. The exploit has been disclosed publicly and may be used. Upgrading to version 0.3.0 is recommended to address this issue. The name of the patch is 4562. It is advisable to upgrade the affected component. Multiple issues were reported to the project. They reacted with a high level of professionalism and kindness: "These five reports are variants of the same root cause: validation of shell commands containing multiple segments, wrappers, comments, or chained commands. The issue was fixed by validating every executable shell segment against the configured allowlist".
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
| August 7, 2026 | Reserved | Reserved by VulDB |
| August 7, 2026 | Published | Published (CNA: VulDB) |
| August 10, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-19243 (HKUDS nanobot). Public exploit reference added. |
Affected
Affected products and packages — 1 row
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
| HKUDS | nanobot | — | 0.2.0 | 0.3.0 |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-19243 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 Wednesday, August 19, 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.