CVE-2026-59673
Received Received - Intake

Cross-Site Scripting in Repasat Application

Publication date: 2026-10-02

Last updated on: 2026-10-02

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

Description
Cross-Site Scripting vulnerability in the Repasat application. Successful exploitation of this vulnerability could allow an attacker to trick a user into executing arbitrary code in the victim’s browser. The “nomTipoCli” parameter is affected – endpoint “/es/clientypes/update/109441”.

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Meta Information

Published
2026-10-02
Last Modified
2026-10-02
Generated
2026-10-02
AI Q&A
2026-10-02
EPSS Evaluated
N/A
NVD
CVE-2026-59673
EUVD
EUVD-2026-91332

Affected Vendors & Products

Currently, no data is known.

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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 Cross-Site Scripting (XSS) vulnerability in the Repasat application. It allows an attacker to inject malicious scripts into web pages viewed by users. The vulnerable parameter is 'nomTipoCli' in the endpoint '/es/clientypes/update/109441'.

Detection Guidance

To detect this Cross-Site Scripting (XSS) vulnerability in the Repasat application, monitor HTTP requests to the /es/clientypes/update/109441 endpoint for unusual input in the nomTipoCli parameter. Check web server logs for suspicious payloads containing script tags or event handlers like onerror= or onload=. Use browser developer tools to inspect client-side interactions with the parameter.

Impact Analysis

An attacker could trick you into executing arbitrary code in your browser. This may lead to theft of session cookies, credentials, or sensitive data. It could also enable actions on your behalf without your consent.

Compliance Impact

This vulnerability could lead to unauthorized access to personal data, violating GDPR and HIPAA requirements. Organizations may face fines or penalties for failing to protect user data adequately.

Mitigation Strategies

Immediately apply input validation and output encoding to the nomTipoCli parameter. Sanitize all user inputs by rejecting or escaping special characters like <, >, and quotes. Implement Content Security Policy (CSP) headers to restrict inline scripts. Update the Repasat application to the latest patched version if available.

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