CVE-2023-33795Public exploitNetwork attack vector

Stored XSS via unescaped contact-role name rendering

Published May 24, 2023 · Updated Nov 27, 2024

Stored XSS in NetBox 3.5.1 allows remote authenticated users to execute script in another user’s browser through a contact-role name. The Create Contact Roles form stores the Name value, and the contact-assignment bulk-edit view renders that value without neutralizing HTML event handlers. The attacker needs permission to create contact roles, and a victim must open an affected role-selection view; the script then runs in that victim’s session.

CVSS severity5.4
Medium
EPSS probability0.39%
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 3.5.1 allows remote authenticated users to execute script in another user’s browser through a contact-role name. The Create Contact Roles form stores the Name value, and the contact-assignment bulk-edit view renders that value without neutralizing HTML event handlers. The attacker needs permission to create contact roles, and a victim must open an affected role-selection view; the script then runs in that victim’s session.

The record

CVE
CVE-2023-33795
Published
May 24, 2023
Updated
Nov 27, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 24, 2023CVE publishedPublication date reported by the CVE source.
  2. Nov 27, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.4NVDCVSS:3.1/AV:N/AC:L/PR:L/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.

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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
Privilegesauthenticated
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/JScript

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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