CVE-2026-90809HKUDS nanobot ExecTool shell.py ExecTool._spawn argument injection
Updated under an hour ago ()
Does this affect you?
It affects HKUDS nanobot. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
Do this next
Free account, 1 product
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
- 7.3 HIGH (v3.1, CNA)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
- Weakness (CWE)
- CWE-88, CWE-74
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulDB
- NVD analysis
- Deferred
- Record last updated
- Sep 15, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
HKUDS nanobot nanobot:nanobot | 0.2.0; 0.2.1 | CNA record |
References
- https://vuldb.com/vuln/403311vdb-entry, technical-description
- https://vuldb.com/vuln/403311/ctisignature, permissions-required
- https://vuldb.com/cve/CVE-2026-90809third-party-advisory
- https://vuldb.com/submit/922850third-party-advisory
- https://github.com/HKUDS/nanobot/issues/5306issue-tracking
- https://github.com/HKUDS/nanobot/pull/5345issue-tracking, patch
- https://github.com/HKUDS/nanobot/commit/af582246f141311d574551b7571a517bcc3df750patch
- https://github.com/HKUDS/nanobot/product
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.