CVE-2026-87855Network attack vectorHinoki check available

Unauthenticated file upload via unchecked image handling

Published Oct 14, 2026 · Updated Oct 14, 2026

File upload in JTL-Software JTL-Connector for WooCommerce 2.4.3 and earlier allows remote attackers to upload executable files. startSession() accepts an empty jtlauth credential, while handleImagePush() inadequately validates file types passed to saveImage(). No authentication is required; remote code execution depends on the uploaded file being executable in the server environment.

CVSS severity9.8
Critical
EPSS probability0.79%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
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Summary

What happened

File upload in JTL-Software JTL-Connector for WooCommerce 2.4.3 and earlier allows remote attackers to upload executable files. startSession() accepts an empty jtlauth credential, while handleImagePush() inadequately validates file types passed to saveImage(). No authentication is required; remote code execution depends on the uploaded file being executable in the server environment.

The record

CVE
CVE-2026-87855
Published
Oct 14, 2026
Updated
Oct 14, 2026
Vendor
JTL-Software
Product
JTL-Connector for WooCommerce
Classifications
CWE-434, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 14, 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 <=2.4.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

JTL-Software · JTL-Connector for WooCommerceversion=0 <=2.4.3

Published CVSS scores

9.8WordfenceCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/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.

Activity data is delayed. The latest report is Sep 28, 2026.

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

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
T1190Exploit Public-Facing Application

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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