What’s Vulnerable › Vulnerabilities

CVE-2026-90808: HKUDS nanobot ExecTool shell.py ExecTool._spawn incomplete blacklist

• Severity: medium (CVSS 6.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-14 · updated 2026-09-14
• Weakness: CWE-183

Description

A vulnerability was determined 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 ExecTool. This manipulation causes incomplete blacklist. It is possible to initiate the attack remotely. Patch name: af582246f141311d574551b7571a517bcc3df750. Applying a patch is the recommended action to fix 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/5305
• https://github.com/HKUDS/nanobot/pull/5345
• https://vuldb.com/cve/CVE-2026-90808
• https://vuldb.com/submit/922849
• https://vuldb.com/vuln/403310
• https://vuldb.com/vuln/403310/cti
• https://github.com/HKUDS/nanobot/issues/5305

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