CVE-2025-48206: Nitsan/ns backup Cross-Site Scripting Vulnerability

LOW
Advisory Identifier: GHSA-xg53-mhh9-3cq7
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CWE-79
Published
Advisory Summary

CVE-2025-48206 is a LOW cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Nitsan/ns backup libraries in the Packagist ecosystem. The issue involves the backup plus extension for typo3 (ns_backup) allows xss. Remediation is available by upgrading affected packages to version 13.0.1.

CVE-2025-48206 at a Glance

CVE Identifier CVE-2025-48206
GHSA Identifier GHSA-xg53-mhh9-3cq7
Severity LOW
CVSS v3.1 Base Score N/A
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product Nitsan/ns backup
Package Ecosystem Packagist
Published Date
Last Updated

How to Fix CVE-2025-48206

To remediate this vulnerability, upgrade all affected Nitsan/ns backup dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

nitsan/ns-backup fixed: 13.0.1 
Upgrade nitsan/ns-backup to 13.0.1
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for nitsan/ns-backup

How to Check if You Are Affected

To determine whether your application is affected by CVE-2025-48206, inspect your project dependencies for Nitsan/ns backup:

inspect dependencies for nitsan/ns-backup

Analyze the terminal output to locate any version of Nitsan/ns backup in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 13.0.1), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'), where the product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. In Nitsan/ns backup, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

The ns_backup extension through 13.0.0 for TYPO3 allows XSS.

CVE-2025-48206 Affected Nitsan/ns backup Versions

1 component(s)
Fixed Versions:
13.0.1
Product / Package Ecosystem Affected Versions Fixed Version
nitsan/ns-backup
 Packagist
< 13.0.1
13.0.1

References

NVD — CVE-2025-48206 NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-48206
Security Fix Commit FIX COMMIT
https://github.com/nitsan-technologies/ns_backup/commit/67b8102a19e8e516dc4228f5c42f9e4fba5046cb
Nitsan/ns backup Source Repository REPOSITORY
https://github.com/nitsan-technologies/ns_backup
Nitsan/ns backup Security Information SECURITY
https://typo3.org/security/advisory/typo3-ext-sa-2025-007

Frequently Asked Questions

What is CVE-2025-48206?
CVE-2025-48206 is a security vulnerability in Nitsan/ns backup involving The Backup Plus extension for TYPO3 (ns_backup) allows XSS under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Nitsan/ns backup versions are affected?
Affected versions include releases prior to 13.0.1 across affected packages: nitsan/ns-backup.
What version fixes CVE-2025-48206?
Upgrading to 13.0.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is nitsan/ns-backup affected?
Yes, nitsan/ns-backup is affected in releases prior to 13.0.1. Upgrade your dependency to 13.0.1 or later.
What CWE is associated with CVE-2025-48206?
CVE-2025-48206 is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.).
How can I check Packagist dependencies for CVE-2025-48206?
Run the dependency tree command: 'inspect dependencies for nitsan/ns-backup'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-xg53-mhh9-3cq7",
  "modified" : "2025-05-21T20:10:17Z",
  "published" : "2025-05-21T18:33:30Z",
  "aliases" : [ "CVE-2025-48206" ],
  "summary" : "The Backup Plus extension for TYPO3 (ns_backup) allows XSS",
  "details" : "The ns_backup extension through 13.0.0 for TYPO3 allows XSS.",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "nitsan/ns-backup"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "13.0.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-48206"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/nitsan-technologies/ns_backup/commit/67b8102a19e8e516dc4228f5c42f9e4fba5046cb"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/nitsan-technologies/ns_backup"
  }, {
    "type" : "WEB",
    "url" : "https://typo3.org/security/advisory/typo3-ext-sa-2025-007"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "LOW",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-05-21T20:10:17Z",
    "nvd_published_at" : "2025-05-21T16:15:33Z"
  }
}