CVE-2026-90808Public exploitNetwork attack vectorHinoki check available

Remote command execution via newline allowlist bypass

Published Sep 14, 2026 · Updated Sep 14, 2026

Command injection in Data Intelligence Lab @ HKU nanobot 0.2.0 through 0.2.1 allows remote attackers to execute unintended shell commands. ExecTool._split_shell_segments treats semicolons and pipes as separators but not newline characters, so _guard_command checks an allowlisted first line while _spawn executes the unchecked following line. Exploitation requires a remotely supplied tool command to reach an ExecTool instance configured with allowPatterns, after which the injected line runs with the nanobot process account's privileges.

CVSS severityUnavailable
Unscored
EPSS probability0.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Command injection in Data Intelligence Lab @ HKU nanobot 0.2.0 through 0.2.1 allows remote attackers to execute unintended shell commands. ExecTool._split_shell_segments treats semicolons and pipes as separators but not newline characters, so _guard_command checks an allowlisted first line while _spawn executes the unchecked following line. Exploitation requires a remotely supplied tool command to reach an ExecTool instance configured with allowPatterns, after which the injected line runs with the nanobot process account's privileges.

The record

CVE
CVE-2026-90808
Published
Sep 14, 2026
Updated
Sep 14, 2026
Vendor
Data Intelligence Lab @ HKU
Product
nanobot
Classifications
T1059
Attack vector
network
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 14, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0.2.0
  2. Affected versionversion=0.2.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesUnavailable in this record.

What is affected?

Data Intelligence Lab @ HKU · nanobotversion=0.2.0; version=0.2.1

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

T1059Command and Scripting Interpreter

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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