ShortPixel Image Optimizer – Optimize Images, Convert WebP & AVIF vulnerabilities
Plugin slug shortpixel-image-optimiser · 11 known vulnerabilities · latest disclosed 2026-10-08 · WordPress.org page
Every listed vulnerability has a fix. Version 6.6.0 or later is not affected by any of them. If your site runs an older version, update it.
3 of 11 rated high or critical (CVSS 7 or more).
Known vulnerabilities in ShortPixel Image Optimizer – Optimize Images, Convert WebP & AVIF
| Severity | Affected versions | Fixed in | CVE | Published | Details |
|---|---|---|---|---|---|
| Medium 6.4 | <= 6.5.6 | 6.6.0 | CVE-2026-103070 | 2026-10-08 | Advisory |
| High 7.5 | <= 6.5.5 | 6.5.6 | CVE-2026-97246 | 2026-09-24 | Advisory |
| High 8.8 | <= 6.5.5 | 6.5.6 | CVE-2026-17086 | 2026-09-17 | Advisory |
| High 7.5 | <= 6.4.3 | 6.4.4 | CVE-2026-39471 | 2026-04-20 | Advisory |
| Medium 5.4 | <= 6.4.3 | 6.4.4 | CVE-2026-4335 | 2026-03-25 | Advisory |
| Medium 4.9 | <= 6.4.2 | 6.4.3 | CVE-2026-1246 | 2026-02-04 | Advisory |
| Medium 5.4 | <= 6.3.4 | 6.3.5 | CVE-2025-11378 | 2025-10-17 | Advisory |
| Medium 4.3 | <= 5.6.3 | 5.6.4 | CVE-2024-48044 | 2024-10-13 | Advisory |
| Medium 4.9 | <= 5.6.3 | 5.6.4 | CVE-2024-48043 | 2024-10-13 | Advisory |
| Medium 6.6 | < 5.4.2 | 5.4.2 | none | 2023-09-14 | Advisory |
| Medium 6.1 | <= 4.22.9 | 4.22.10 | none | 2022-06-02 | Advisory |
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Questions
Is the ShortPixel Image Optimizer – Optimize Images, Convert WebP & AVIF plugin safe to use?
All 11 known issues are fixed in current versions (6.6.0 or later). Keeping it updated is what matters.
How do I check which version of ShortPixel Image Optimizer – Optimize Images, Convert WebP & AVIF my site runs?
In WordPress go to Plugins > Installed Plugins. From the outside, the free PluginPeek scan below reads the version from the site's public files.
How do I fix a vulnerable plugin?
Make a full backup, then update it from Dashboard > Updates and check the site afterwards. If you would rather not, we can do it for a fixed $99, paid after you have checked the site.