CVE-2026-39471

WordPress ShortPixel Image Optimizer plugin <= 6.4.3 - PHP Object Injection vulnerability

Published Jun 15, 2026 CVSS 3.1 · 7.2 High EPSS < 1% KEV · Not listed
Description
Author PHP Object Injection in ShortPixel Image Optimizer <= 6.4.3 versions.

Remediation

Vendor Solution

Update the WordPress ShortPixel Image Optimizer Plugin to the latest available version (at least 6.4.4).

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Shortpixel
Shortpixel shortpixel Image Optimizer
Wordpress
Wordpress wordpress
Vendors & Products Shortpixel
Shortpixel shortpixel Image Optimizer
Wordpress
Wordpress wordpress
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description Author PHP Object Injection in ShortPixel Image Optimizer <= 6.4.3 versions.
Title WordPress ShortPixel Image Optimizer plugin <= 6.4.3 - PHP Object Injection vulnerability
Weaknesses CWE-502
References
Metrics cvssV3_1

{'score': 7.2, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Patchstack
Published
Updated
Jun 15, 2026, 10:16 PM
Reserved
Apr 7, 2026, 10:41 AM
Status
Deferred
Published
Jun 15, 2026, 9:16 PM
Modified
Oct 25, 2026, 11:10 PM