PHP Object Injection Vulnerability in ShortPixel Image Optimizer
CVE-2026-39471

7.2HIGH

Key Information:

Vendor

WordPress
Status
Shortpixel Image Optimizer
Vendor
CVE Published:
15 June 2026

What is CVE-2026-39471?

The ShortPixel Image Optimizer plugin for WordPress is vulnerable to a PHP Object Injection attack in versions up to 6.4.3. This vulnerability allows attackers to manipulate object serialization, potentially leading to remote code execution or other malicious actions. Website owners using affected versions should update their plugin immediately to safeguard against exploitation.

Affected Version(s)

ShortPixel Image Optimizer <= 6.4.3

References

https://patchstack.com/database/wordpress/plugin/shortpix...
vdb-entry

CVSS V3.1

Score:
7.2
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

daroo | Patchstack Bug Bounty Program
.