Vulnerability in Hkuds Nanobot
CVE-2026-90808
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.004 (35.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 35th percentile — 35.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Hkuds Nanobot — versions 0.2.0, 0.2.1
Weakness classification (CWE)
References
- vuldb.com/vuln/403310 (technical-description, vdb-entry)
- vuldb.com/vuln/403310/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-90808 (third-party-advisory)
- vuldb.com/submit/922849 (third-party-advisory)
- github.com/HKUDS/nanobot/issues/5305 (issue-tracking)
- github.com/HKUDS/nanobot/pull/5345 (issue-tracking, patch)
- github.com/HKUDS/nanobot/commit/af582246f141311d574551b7571a517bcc3df750 (patch)
- github.com/HKUDS/nanobot/ (product)
Frequently asked questions
- What is CVE-2026-90808?
- CVE-2026-90808 is a medium-severity vulnerability in Hkuds Nanobot, classified under CWE-183. CVSS score: 6.3/10. Published 2026-09-14.
- How severe is CVE-2026-90808?
- Medium severity. CVSS v3 base score is 6.3 out of 10.