What is CVE-2025-48206?

CVE-2025-48206 is a medium-severity vulnerability in Nitsantech Ns-Backup, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2025-05-21.

How severe is CVE-2025-48206?

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

XSS in Nitsantech Ns-Backup

CVE-2025-48206

The ns_backup extension through 13.0.0 for TYPO3 allows XSS.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2025-05-21 · last modified 2026-06-17.

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.

EPSS exploit prediction

EPSS: 0.002 (12.7th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 13th percentile — 12.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

Nitsantech Ns-Backup
TYPO3 Ns Backup Extension — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

typo3.org/security/advisory/typo3-ext-sa-2025-007 (Vendor Advisory)

Frequently asked questions

What is CVE-2025-48206?: CVE-2025-48206 is a medium-severity vulnerability in Nitsantech Ns-Backup, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2025-05-21.
How severe is CVE-2025-48206?: Medium severity. CVSS v3 base score is 6.1 out of 10.