CVE-2025-48206 The Backup Plus extension for TYPO3 (ns_backup) allows XSS
Cross-site scripting vulnerability in the ns_backup extension for TYPO3 allows attackers to inject malicious scripts.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2025-48206?
CVE-2025-48206 is a medium-severity cross-site scripting vulnerability in TYPO3 ns backup extension, published on 21 May 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
The ns_backup extension through 13.0.0 for TYPO3 allows XSS.
Weakness: CWE-79
Which versions are affected by CVE-2025-48206?
2 open source packages ship an affected version, including nitsan/ns-backup. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
nitsan/ns-backup Packagist | All versions | 13.0.1 |
nitsan/ns-backup Packagist | All versions | 13.0.1 |
Products include Nitsantech Ns-Backup.
How do I fix CVE-2025-48206?
Upgrade nitsan/ns-backup to 13.0.1 or later.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2025-48206 being exploited?
There is no known exploitation of CVE-2025-48206 in the wild and no public exploit code.
Sources
Also known as GHSA-xg53-mhh9-3cq7.