CVE-2026-90809
HKUDS nanobot ExecTool shell.py ExecTool._spawn argument injection
- State
- Published
- Severity
- 6.9 Medium
- Published
- Sep 14, 2026
- Updated
- Sep 15, 2026
- Reserved
- Sep 13, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.9 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X | VulDB |
| 3.1 | 7.3 High | 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 | VulDB |
| 3.0 | 7.3 High | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:X/RL:O/RC:C | VulDB |
| 2.0 | 7.5 High | AV:N/AC:L/Au:N/C:P/I:P/A:P/E:ND/RL:OF/RC:C | VulDB |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
nanobotHKUDS |
|
References
- VDB-403311 | HKUDS nanobot ExecTool shell.py ExecTool._spawn argument injectionvdb-entrytechnical-description
- VDB-403311 | CTI Indicators (IOB, IOC, TTP, IOA)signaturepermissions-required
- CVE-2026-90809 | CVE Analysis and Reportthird-party-advisory
- Submit #922850 | HKUDS nanobot <= 0.2.1 Improper Neutralization of Argument Delimiters in a Command (CWE-88)third-party-advisory
- https://github.com/HKUDS/nanobot/issues/5306issue-tracking
- https://github.com/HKUDS/nanobot/pull/5345issue-trackingpatch
- https://github.com/HKUDS/nanobot/commit/af582246f141311d574551b7571a517bcc3df750patch
- https://github.com/HKUDS/nanobot/product
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