CVE-2024-40736Public exploitNetwork attack vector

Browser script execution via crafted power-outlet names

Published Jul 9, 2024 · Updated Aug 2, 2024

Cross-site scripting in NetBox 4.0.3 allows remote attackers to execute arbitrary browser scripts through crafted power-outlet names. The power-outlet creation view accepts a crafted Name value at /dcim/power-outlets/add and renders it as executable script or HTML without neutralization. Exploitation requires a victim to load affected output; successful script runs in that browser's NetBox origin and can act with the victim's access.

CVSS severity6.1
Medium
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in NetBox 4.0.3 allows remote attackers to execute arbitrary browser scripts through crafted power-outlet names. The power-outlet creation view accepts a crafted Name value at /dcim/power-outlets/add and renders it as executable script or HTML without neutralization. Exploitation requires a victim to load affected output; successful script runs in that browser's NetBox origin and can act with the victim's access.

The record

CVE
CVE-2024-40736
Published
Jul 9, 2024
Updated
Aug 2, 2024
Vendor
NetBox Labs
Product
NetBox
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 9, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record 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=4.0.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

NetBox Labs · NetBoxversion=4.0.3

Published CVSS scores

6.1NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
6.1CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007Command and Scripting Interpreter: JavaScript

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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