What’s Vulnerable › Vulnerabilities

CVE-2026-90809: HKUDS nanobot ExecTool shell.py ExecTool._spawn argument injection

• Severity: high (CVSS 7.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-14 · updated 2026-09-15
• Weakness: CWE-74

Description

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.

Affected products

• HKUDS nanobot: 0.2.0, 0.2.1

References

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

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