Simple Image Sizes
Simple Image Sizes has one disclosed vulnerability in the WordSec catalog, all reported in 2025; it is fixed as of September 2026. Their average CVSS score is 4.4, and the most serious one scores 4.4 out of 10.
The most common weakness is Cross-Site Scripting, behind 1 of the records (100%).
The one issue recorded for Simple Image Sizes has a vendor fix available, so running the current release closes it.
All of these findings were reported by meru22371. Simple Image Sizes is installed on roughly 60,000 WordPress sites, so each unpatched flaw has a wide blast radius. The current release is tested up to WordPress 7.1.
CVE-2025-24810Simple Image Sizes <= 2.3.2 - Authenticated (Admin+) Stored Cross-Site Scripting
Read the full analysisVulnerability Records
Simple Image Sizes
Author
Nicolas Juen
This plugin lets you create custom image sizes for your site. Override your theme sizes directly on the Media settings page, regenerate thumbnails, and copy add_image_size PHP for your theme. ℹ️ Simple Image Sizes, a Mediapapa product Simple Image Sizes will always remain free. It is actively maintained by me (Nicolas Juen). I’m also building Mediapapa, a complementary plugin focused on understanding and organizing your media library. More on these changes Features Insert images in posts at the right size using your custom sizes. Control whether each size appears in the “Insert media” size dropdown. Regenerate thumbnails in bulk from Settings → Media, and pick which sizes to rebuild. Copy generated add_image_size PHP for your theme when you want to keep sizes and deactivate the plugin. Regenerate from the Media library: one file at a time or with list bulk actions. Regenerate from a single attachment’s edit screen. Approximate end time and clearer feedback while bulk regeneration runs. Contribute on GitHub directly.
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