CVE-2025-40720Network attack vector

Reflected XSS via unsanitized campo parameter

Published Jul 8, 2025 · Updated Jul 10, 2025

Reflected XSS in Quiter Gateway before 4.7.0 allows remote attackers to execute JavaScript in a victim's browser via a malicious URL. The /FacturaE/VerFacturaPDF endpoint reflects the campo parameter into generated page content without neutralizing browser-active input. Exploitation requires no account but requires the victim to open the crafted URL, enabling script actions within the Gateway origin.

CVSS severity5.1
Medium
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected XSS in Quiter Gateway before 4.7.0 allows remote attackers to execute JavaScript in a victim's browser via a malicious URL. The /FacturaE/VerFacturaPDF endpoint reflects the campo parameter into generated page content without neutralizing browser-active input. Exploitation requires no account but requires the victim to open the crafted URL, enabling script actions within the Gateway origin.

The record

CVE
CVE-2025-40720
Published
Jul 8, 2025
Updated
Jul 10, 2025
Vendor
Quiter Servicios Informáticos, S.L.
Product
Quiter Gateway
Classifications
CWE-79, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 8, 2025CVE publishedPublication date reported by the CVE source.
  2. Jul 10, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <4.7.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Quiter Servicios Informáticos, S.L. · Quiter Gatewayversion=0 <4.7.0

Published CVSS scores

6.1INCIBE-CERTCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
5.1INCIBE-CERTCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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