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CVE-2026-90809mediumCWE-74CWE-88

HKUDS nanobot ExecTool shell.py ExecTool._spawn argument injection

13Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 6.9epss 0.3%
exploitation probability
0.3%top 74% of all CVEs
observed exploitation
nono source reports it
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.
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
Affected products
HKUDS · nanobot
References
https://github.com/HKUDS/nanobot/https://github.com/HKUDS/nanobot/commit/af582246f141311d574551b7571a517bcc3df750https://github.com/HKUDS/nanobot/issues/5306https://github.com/HKUDS/nanobot/pull/5345https://vuldb.com/cve/CVE-2026-90809https://vuldb.com/submit/922850https://vuldb.com/vuln/403311https://vuldb.com/vuln/403311/cti