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9.8

ShiftCV theme lets attackers run code on your site

CVE-2026-66564 · published 5 days ago
Summary

The ShiftCV theme for WordPress (versions up to 3.0.14) can be tricked into executing any code an attacker supplies, even without logging in. This could let a malicious user take control of your website or steal data. Update the theme to a newer version or replace it with a safer alternative as soon as possible.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
themerex shiftcv <= 3.0.14
Original advisory text
WordPress ShiftCV theme <= 3.0.14 - PHP Object Injection vulnerability
Unauthenticated PHP Object Injection in ShiftCV <= 3.0.14 versions.
References
Fix within
Internet-facing 3 days
Internal 60 days
  • Not known to be exploited
  • Can be exploited automatically
  • Gives an attacker full control
Severity
9.8 Critical
Exploitation
<1% chance of attack within 30 days
Type
CWE-502Deserialization of Untrusted Data
Timeline
Published10 Oct 2026
Updated15 Oct 2026
First seen10 Oct 2026
Sources
CVE-2026-66564 · NVD
CVE-2026-66564 · MITRE
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