CVE-2024-40727Public exploitNetwork attack vector

Stored XSS via unescaped console port name

Published Jul 9, 2024 · Updated Aug 2, 2024

Stored XSS in NetBox 4.0.3 allows remote attackers to execute scripts in another user's browser through a crafted console port name. The console-server-port creation path accepts a crafted Name value and later places it into web output without neutralizing executable HTML or JavaScript. Exploitation requires another user to view the affected interface, where the injected content runs in that user's browser context.

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

Stored XSS in NetBox 4.0.3 allows remote attackers to execute scripts in another user's browser through a crafted console port name. The console-server-port creation path accepts a crafted Name value and later places it into web output without neutralizing executable HTML or JavaScript. Exploitation requires another user to view the affected interface, where the injected content runs in that user's browser context.

The record

CVE
CVE-2024-40727
Published
Jul 9, 2024
Updated
Aug 2, 2024
Vendor
NetBox Labs
Product
NetBox
Classifications
CWE-79, T1189
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

Compare your product and version with the public record. A matching version still requires validation against your environment.

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

5.4CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
6.1NIST NVDCVSS: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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 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')
T1189Drive-by Compromise

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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