CVE-2026-14289Public exploitNetwork attack vector

Unauthenticated RCE via empty-key file handler

Published Jul 27, 2026 · Updated Jul 27, 2026

Code injection in FacturaONE para WooCommerce con VeriFactu before 5.37 allows remote attackers to execute code via a public handler. The handler decrypts a URL token with an API-key-derived key that is empty by default, fetches attacker-controlled PHP, and writes it into a web-accessible uploads directory. Exploitation requires an active but unconfigured plugin; setting an API key prevents forged empty-key tokens from reaching the file-writing branch.

CVSS severity9.0
Critical
EPSS probability0.40%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code injection in FacturaONE para WooCommerce con VeriFactu before 5.37 allows remote attackers to execute code via a public handler. The handler decrypts a URL token with an API-key-derived key that is empty by default, fetches attacker-controlled PHP, and writes it into a web-accessible uploads directory. Exploitation requires an active but unconfigured plugin; setting an API key prevents forged empty-key tokens from reaching the file-writing branch.

The record

CVE
CVE-2026-14289
Published
Jul 27, 2026
Updated
Jul 27, 2026
Vendor
FacturaOne Software S.L.
Product
FacturaONE para WooCommerce con VeriFactu
Classifications
CWE-94, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 27, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 27, 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=0 <5.37

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

FacturaOne Software S.L. · FacturaONE para WooCommerce con VeriFactuversion=0 <5.37

Published CVSS scores

7.6TenableAV:N/AC:H/Au:N/C:C/I:C/A:C
9.0CISA-ADPCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
T1190Exploit Public-Facing Application

Public exploit references

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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