CVE-2025-40720: Reflected Cross-site Scripting (XSS) vulnerability in Quiter Gateway

Severity: medium (CVSS 6.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-07-08 · updated 2026-06-17
Weakness: CWE-79

Description

Reflected Cross-site Scripting (XSS) vulnerability in versions prior to 4.7.0 of Quiter Gateway by Quiter. This vulnerability allows an attacker to execute JavaScript code in the victim's browser by sending a malicious URL trhough the campo parameter in /<Client>FacturaE/VerFacturaPDF.

Affected products

Quiter Gateway (Java WAR on Apache Tomcat): before 4.7.0 — fixed in 4.7.0

How to fix

Upgrade to a fixed version: Quiter Gateway (Java WAR on Apache Tomcat) 4.7.0. Check the vendor advisory for mitigations.

References

https://www.incibe.es/en/incibe-cert/notices/aviso/multiple-vulnerabilities-quiterweb-autoweb-quiter

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