What is CVE-2025-11378?

CVE-2025-11378 is a medium-severity vulnerability in Shortpixel Image Optimizer – Optimize Images, Convert Webp & Avif, classified under Missing Authorization. CVSS score: 5.4/10. Published 2025-10-18.

How severe is CVE-2025-11378?

Medium severity. CVSS v3 base score is 5.4 out of 10.

Auth bypass in Shortpixel Image Optimizer – Optimize Images, Convert Webp & Avif

CVE-2025-11378

The ShortPixel Image Optimizer – Optimize Images, Convert WebP & AVIF plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the 'shortpixel_ajaxRequest' AJAX action in all versions up to, and including, 6.3.4. This makes it possible for authenticated attackers, with Contributor-level access and above, to export and import site options.

Vulnerability class: Broken Access Control

EPSS: 0.003 (21.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N.

Affected products

Shortpixel Image Optimizer – Optimize Images, Convert Webp & Avif — versions 0

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

Frequently asked questions

What is CVE-2025-11378?: CVE-2025-11378 is a medium-severity vulnerability in Shortpixel Image Optimizer – Optimize Images, Convert Webp & Avif, classified under Missing Authorization. CVSS score: 5.4/10. Published 2025-10-18.
How severe is CVE-2025-11378?: Medium severity. CVSS v3 base score is 5.4 out of 10.