CVE-2026-59667
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 “nomTamano” parameter is affected – endpoint “/es/companysizemployees/update”.

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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-2026-59667
EUVD
EUVD-2026-91368

Affected Vendors & Products

Currently, no data is known.

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 Cross-Site Scripting (XSS) vulnerability in the Repasat application. It allows an attacker to inject malicious scripts into web pages viewed by users through the 'nomTamano' parameter at the '/es/companysizemployees/update' endpoint. When exploited, it can trick users into executing arbitrary code in their browsers.

Detection Guidance

To detect this Cross-Site Scripting vulnerability in the Repasat application, inspect the 'nomTamano' parameter in the '/es/companysizemployees/update' endpoint for improper input validation. Check web server logs for unusual requests containing script tags or payloads targeting this parameter.

Impact Analysis

If exploited, this vulnerability could allow attackers to steal sensitive user data, hijack user sessions, or perform actions on behalf of the user without their consent. It may also lead to defacement of web pages or redirection to malicious sites.

Compliance Impact

This vulnerability could lead to breaches of GDPR by exposing personal data or HIPAA by compromising protected health information if user data is accessed or manipulated. Organizations may face compliance violations, legal penalties, and reputational damage.

Mitigation Strategies

Immediately apply input validation and output encoding to the 'nomTamano' parameter. Sanitize user inputs to prevent script execution. Update the Repasat application to the latest patched version if available. Consider implementing a Web Application Firewall (WAF) to block malicious payloads.

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