CVE-2026-2677Network attack vector

Browser script execution via reflected name parameter

Published Feb 26, 2026 · Updated Feb 26, 2026

Reflected XSS in a3factura 4.111.2-rev.1 allows remote authenticated users to execute script in a victim's browser through a crafted name value. The representatives-management route reflects the name parameter into page output without sufficient neutralization before the browser interprets it. Exploitation requires low-privileged access and active victim interaction; execution remains in the victim's browser context and affects confidentiality and integrity, not service availability.

CVSS severity4.8
Medium
EPSS probability0.16%
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 a3factura 4.111.2-rev.1 allows remote authenticated users to execute script in a victim's browser through a crafted name value. The representatives-management route reflects the name parameter into page output without sufficient neutralization before the browser interprets it. Exploitation requires low-privileged access and active victim interaction; execution remains in the victim's browser context and affects confidentiality and integrity, not service availability.

The record

CVE
CVE-2026-2677
Published
Feb 26, 2026
Updated
Feb 26, 2026
Vendor
Wolters Kluwer
Product
a3factura
Classifications
CWE-79, T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 26, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 26, 2026Record 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=4.111.2-rev.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Wolters Kluwer · a3facturaversion=4.111.2-rev.1

Published CVSS scores

6.1National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
4.8Spanish National Cybersecurity Institute, S.A. (INCIBE)CVSS:4.0/AV:N/AC:L/AT:N/PR:L/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.

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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
Privilegesauthenticated
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.

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Technologies

Your stack

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Your stack

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