CVE-2026-5700
Received Received - Intake

Stored XSS in SABBATIC Application via Observaciones Parameter

Publication date: 2026-10-29

Last updated on: 2026-10-29

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

Description
Stored Cross-Site Scripting (XSS) vulnerability in SABBATIC application that allows an attacker to store JavaScript code so that when a user views the page, code can be executed in the victim's browser. The list of assigned parameters and identifiers is as follows:  parameter 'observaciones' in  /mis-gastos  endpoint.

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Meta Information

Published
2026-10-29
Last Modified
2026-10-29
Generated
2026-10-29
AI Q&A
2026-10-29
EPSS Evaluated
N/A
NVD
CVE-2026-5700
EUVD
EUVD-2026-112742

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
SABBATIC SABBATIC app versions prior to 7.96.0.1 y 7.96.0.2

Helpful Resources

Exploitability

CWE
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KEV
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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.

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Executive Summary

This is a Stored Cross-Site Scripting (XSS) vulnerability in the SABBATIC application. It allows an attacker to inject malicious JavaScript code into the 'observaciones' parameter of the /mis-gastos endpoint. When a user views the affected page, the injected code executes in their browser.

Detection Guidance

To detect this Stored XSS vulnerability in the SABBATIC application, inspect the 'observaciones' parameter in the /mis-gastos endpoint for malicious JavaScript code. Check server logs for unusual input patterns or payloads in this parameter. Manually review application responses for script tags or event handlers in stored data.

Impact Analysis

An attacker could steal user sessions, redirect users to malicious sites, or perform actions on behalf of users. It may lead to unauthorized data access, account takeovers, or defacement of the application.

Compliance Impact

This vulnerability could lead to data breaches, violating GDPR's integrity and confidentiality principles or HIPAA's security requirements. It may result in unauthorized access to personal or health data, leading to legal penalties and reputational damage.

Mitigation Strategies

Immediately sanitize user input for the 'observaciones' parameter using a library like DOMPurify or OWASP ESAPI. Implement strict output encoding when rendering stored data. Apply Content Security Policy (CSP) headers to restrict inline scripts. Update the application to the latest patched version if available.

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