Arbitrary file upload in WordPress - CVE-2026-65640
Published: August 12, 2026
Vulnerability identifier: #VU141728
CSH Severity: Medium
CVSS v4: 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]
CVE-ID: CVE-2026-65640
CWE-ID: CWE-434
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
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.
Affected software
WordPress
How to mitigate CVE-2026-65640
Install security update from vendor's website.
WordPress - addressed in versions 4.7.35, 4.8.30, 4.9.31, 5.0.27, 5.1.24, 5.2.26, 5.3.23, 5.4.21, 5.5.20, 5.6.19, 5.7.17, 5.8.15, 5.9.16, 6.0.14, 6.1.12, 6.2.11, 6.3.10, 6.4.10, 6.5.10, 6.6.7, 6.7.7, 6.8.8, 6.9.7, 7.0.4