CVE-2026-90809

HIGH 7.3

HKUDS nanobot ExecTool shell.py ExecTool._spawn argument injection

CVSS Score

7.3

EPSS Score

0.0%

EPSS Percentile

0th

A vulnerability was identified in HKUDS nanobot up to 0.2.1. The affected element is the function ExecTool._guard_command/ExecTool._spawn of the file nanobot/agent/tools/shell.py of the component ExecTool. Such manipulation leads to argument injection. It is possible to launch the attack remotely. The name of the patch is af582246f141311d574551b7571a517bcc3df750. It is best practice to apply a patch to resolve this issue.

CWE	CWE-88 CWE-74
Vendor	hkuds
Product	nanobot
Published	Sep 14, 2026
Last Updated	Sep 15, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:X/RL:O/RC:C

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

HKUDS / nanobot

0.2.0 0.2.1

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/vuln/403311 vuldb.com: https://vuldb.com/vuln/403311/cti vuldb.com: https://vuldb.com/cve/CVE-2026-90809 vuldb.com: https://vuldb.com/submit/922850 github.com: https://github.com/HKUDS/nanobot/issues/5306 github.com: https://github.com/HKUDS/nanobot/pull/5345 github.com: https://github.com/HKUDS/nanobot/commit/af582246f141311d574551b7571a517bcc3df750 github.com: https://github.com/HKUDS/nanobot/

Credits

🔍 Eric-a (VulDB User)