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Access violation vulnerability in ShortPixel Image Optimizer – Optimize Images, Convert WebP & AVIF 6.3.4

  • Severity: medium-risk
  • Status: Fixed
  • Publication: October 17, 2025

The ShortPixel Image Optimizer is a plugin for WordPress that helps optimize images and convert them to WebP and AVIF formats. However, it has a vulnerability that allows unauthorized people to change data without permission. This is because it does not have a proper check to make sure only certain people can use a feature called ‘shortpixel_ajaxRequest’. This means that someone with Contributor-level access or higher can export and import site options without permission.

Detected in:

ShortPixel Image Optimizer – Optimize Images, Convert WebP & AVIF fixed vulnerable versions: >= * <= 6.3.4

This information is sourced from www.wpvulnerability.com. An open-source database of vulnerabilities maintained by the community. Help us out by submitting vulnerabilities!

Version compare shows which versions have a vulnerability. For example: >= 2.2.8 <= 2.2.21 means:

> from 2.2.8
= including 2.2.8 & 2.2.21
< to 2.2.21

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