CVE-2026-11959
Received Received - Intake

Stored XSS in FacturaScripts Application

Publication date: 2026-10-20

Last updated on: 2026-10-20

Assigner: Spanish National Cybersecurity Institute, S.A. (INCIBE)

Description
Stored Cross-Site Scripting (XSS) in FacturaScripts, version 2025.61, caused by a lack of adequate validation or sanitisation of user input in the ‘city’ and ‘province’ fields in the ‘ListAlmacen’ endpoint. Successful exploitation of this vulnerability could allow an attacker to execute arbitrary JavaScript code in the victim’s browser (the application user) or to escalate privileges from a normal user to an administrator by executing specially crafted JavaScript code, thereby compromising the system’s confidentiality or hijacking the session (even with httpOnly cookies by extracting CSRF tokens).

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-10-20
Last Modified
2026-10-20
Generated
2026-10-20
AI Q&A
2026-10-20
EPSS Evaluated
N/A
NVD
CVE-2026-11959
EUVD
EUVD-2026-104833

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
FacturaScripts FacturaScripts 2025.61

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-79 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.

Attack-Flow Graph

AI Quick Actions

Instant insights powered by AI
Executive Summary

This is a Stored Cross-Site Scripting (XSS) vulnerability in FacturaScripts version 2025.61. It occurs because user input in the 'city' and 'province' fields of the 'ListAlmacen' endpoint is not properly validated or sanitized. An attacker can inject malicious JavaScript code that gets stored on the server and executed in the browsers of other users.

Detection Guidance

To detect this vulnerability, inspect user input fields 'city' and 'province' in the 'ListAlmacen' endpoint for stored XSS payloads. Check server logs for unusual JavaScript code submissions. Use browser developer tools to monitor network requests for suspicious payloads in responses.

Impact Analysis

If exploited, this vulnerability could allow an attacker to run arbitrary JavaScript in your browser. This could lead to session hijacking, theft of sensitive data, or privilege escalation from a regular user to an administrator account. Even with httpOnly cookies, attackers could extract CSRF tokens to perform unauthorized actions.

Compliance Impact

This vulnerability could lead to unauthorized access to personal or sensitive data, violating GDPR and HIPAA compliance requirements. It may result in data breaches, loss of confidentiality, and failure to meet regulatory obligations for protecting user information.

Mitigation Strategies

Update FacturaScripts to the latest version where the vulnerability is patched. Implement strict input validation and output encoding for 'city' and 'province' fields. Sanitize user inputs to remove or neutralize JavaScript code before storage.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-11959. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart