Risk Letters

Exploited vulnerability

CVE-2026-87855

TLP:CLEAR

Unrestricted Upload of File with Dangerous Type

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 upl

Facts

  • Vendor: ntbyk
  • Product: JTL-Connector for WooCommerce
  • CVSS: 9.8
  • EPSS (probability of exploitation within 30 days): 0.8 %
  • First known exploitation: 22 October 2026
  • First seen by Risk Letters: 14 October 2026

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Data: NVD (public domain), CISA KEV, FIRST EPSS, MITRE ATT&CK, AlienVault OTX. NVD