SB20260812207 - Remote code execution via malicious file upload in WordPress

CSH
CYBERSECURITY HELP
Sign In REGISTER

Main Vulnerability Database SB20260812207

SB20260812207 - Remote code execution via malicious file upload in WordPress

Published: August 12, 2026

Security Bulletin ID SB20260812207
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Arbitrary file upload (CVE-ID: CVE-2026-65640)

CWE-ID: CWE-434 - Unrestricted Upload of File with Dangerous Type

CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote user to execute arbitrary code.

The vulnerability exists due to unrestricted upload of file with dangerous type in the file upload functionality when processing a malicious Postscript file upload. A remote user with Author or higher privileges can upload a specially crafted Postscript file to execute arbitrary code.

Exploitation requires Imagick and Ghostscript to be in use on the server.


Remediation

Install update from vendor's website.

References