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Exploited vulnerability

CVE-2026-103688

TLP:CLEAR

Unrestricted Upload of File with Dangerous Type

The Checkout Files Upload for WooCommerce WordPress plugin before 2.4.0 does not validate uploaded file types when its accepted file types setting is left empty, which it documents as the way to accept all files, allowing unauthenticated users to upload arbitrary files, including PHP files that lead to remote code execution on servers that execute PHP from the uploads directory.

Facts

  • Vendor: WP Wham
  • Product: Checkout Files Upload for WooCommerce
  • CVSS: 9.8
  • EPSS (probability of exploitation within 30 days): 0.6 %
  • First known exploitation: 28 October 2026
  • First seen by Risk Letters: 28 October 2026

Members see which Nordic sectors the flaw hits, and what to do about it.

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

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