What is CVE-2025-57543?

CVE-2025-57543 is a medium-severity vulnerability in Netbox, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-03-16.

How severe is CVE-2025-57543?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Netbox

CVE-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 in certain contexts.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.002 (7.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Netbox — versions 4.3.5
N/a — versions n/a

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

cve@mitre.org (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2025-57543?: CVE-2025-57543 is a medium-severity vulnerability in Netbox, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-03-16.
How severe is CVE-2025-57543?: Medium severity. CVSS v3 base score is 6.1 out of 10.