CVE-2026-87855
Critical
Description
The JTL-Connector for WooCommerce plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 2.4.3 via the saveImage() function. This is due to the startSession() function accepting an empty jtlauth parameter as a valid credential, combined with insufficient file type validation in handleImagePush(). This makes it possible for unauthenticated attackers to upload files that may be executable, which makes remote code execution possible.
SeverityCritical
CVSS9.8
Exploit probability—
ProductJTL-Connector for WooCommerce
PublishedOct 14, 2026
First seenOct 14, 2026
Weakness typeCWE-434Unrestricted upload of dangerous file type
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| ntbyk JTL-Connector for WooCommerce | v ≤ 2.4.3 | — |
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