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CVE-2026-90809

7.3 · HIGH

A vulnerability was identified in HKUDS nanobot up to 0.2.1.

Published Sep 14, 2026CWE-74EPSS 0.56%

Overview

CVE-2026-90809 is a high-severity vulnerability. It was published on September 14, 2026 and has a CVSS 3.1 base score of 7.3 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.3, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/HKUDS/nanobot/GitHubgithub.com/HKUDS/nanobot/commit/af582246f141311d574551b7571a517bcc3df750GitHubgithub.com/HKUDS/nanobot/issues/5306GitHubgithub.com/HKUDS/nanobot/pull/5345Refvuldb.com/cve/CVE-2026-90809Refvuldb.com/submit/922850Refvuldb.com/vuln/403311Refvuldb.com/vuln/403311/cti

How CyberStrike helps

Frequently asked questions

What is CVE-2026-90809?

CVE-2026-90809 is a high-severity vulnerability. It was published on September 14, 2026 and has a CVSS 3.1 base score of 7.3 (HIGH).

How severe is CVE-2026-90809?

This vulnerability has a CVSS 3.1 base score of 7.3, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-90809?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-90809?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-90809 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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