Author PHP Object Injection in ShortPixel Image Optimizer

Publication date: 2026-06-15

Last updated on: 2026-06-15

Assigner: Patchstack

Description

Author PHP Object Injection in ShortPixel Image Optimizer <= 6.4.3 versions.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-06-15

Last Modified

2026-06-15

Generated

2026-07-06

AI Q&A

2026-06-16

EPSS Evaluated

2026-07-04

NVD

CVE-2026-39471

Affected Vendors & Products

Vendor	Product	Version / Range
shortpixel	image_optimizer	to 6.4.3 (inc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-502	The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.

Attack-Flow Graph

Executive Summary

This vulnerability is an PHP Object Injection issue found in the ShortPixel Image Optimizer plugin versions up to and including 6.4.3.

Impact Analysis

The vulnerability has a CVSS v3.1 base score of 7.2, indicating a high severity. It allows an attacker with high privileges to execute code remotely without user interaction, potentially leading to complete compromise of confidentiality, integrity, and availability of the affected system.

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