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Vulnerabilities

Vulnerability · CVE-2025-57543

Cross Site scripting vulnerability (XSS) in NetBox 4.3.5 "comment" field on object forms.

Published Mar 16, 2026 · catalog updated Jun 17, 2026 · Cross Site scripting vulnerability

Check if you run it

No confirmed exploitation is on record for CVE-2025-57543. EPSS is 0.18%. Act only if a listed version of Cross Site scripting vulnerability is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Cross Site scripting vulnerability).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium6.1
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.18%
Remediation
Not established
Affected products
cpe netbox/netbox

Cross Site scripting vulnerability (XSS) in NetBox 4.3.5 "comment" field on object forms. An attacker can inject arbitrary HTML, which will be rendered in the web UI when viewed by other users. This could potentially lead to user interface redress attacks or be escalated to XSS in certain contexts.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe netbox/netbox4.3.5

How to fix CVE-2025-57543

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-57543. EPSS is 0.18%. Act only if a listed version of Cross Site scripting vulnerability is installed.

Which versions are affected?

Compare what you have installed with 4.3.5. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-79: Cross-site Scripting (XSS). EPSS 0.18%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Mar 16, 2026 · NIST NVD

    Detected

    Cross Site scripting vulnerability (XSS) in NetBox 4.3.5 "comment" field on object forms. An attacker can inject arbitrary HTML, which will be rendered in the web UI when viewed by other users. This could potentially lead to user interface redress attacks or be escalated to XSS in certain contexts.

  2. Jun 17, 2026 · NIST NVD

    Updated

    Cross Site scripting vulnerability (XSS) in NetBox 4.3.5 "comment" field on object forms. An attacker can inject arbitrary HTML, which will be rendered in the web UI when viewed by other users. This could potentially lead to user interface redress attacks or be escalated to XSS in certain contexts.

Sources

  • CVE.orgVulnerability recordCVE-2025-57543

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-57543

    30-day exploitation probability 0.2%

    first.org
  • NIST NVDVulnerability recordCVE-2025-57543

    Cross Site scripting vulnerability (XSS) in NetBox 4.3.5 "comment" field on object forms. An attacker can inject arbitrary HTML, which will be rendered in the web UI when viewed by other users. This could potentially lead to user interface redress attacks or be escalated to XSS i

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.