Unauthorized Data Modification in ShortPixel Image Optimizer for WordPress
CVE-2025-11378

5.4MEDIUM

Key Information:

Vendor

WordPress
Status
Shortpixel Image Optimizer – Optimize Images, Convert Webp & Avif
Vendor
CVE Published:
18 October 2025

What is CVE-2025-11378?

The ShortPixel Image Optimizer plugin is at risk due to a missing capability check on the 'shortpixel_ajaxRequest' AJAX action. This vulnerability allows authenticated users with Contributor-level access or higher to export and import site options. Attackers could exploit this flaw to modify site settings without proper permissions, presenting a serious risk to site integrity and data security.

Affected Version(s)

ShortPixel Image Optimizer – Optimize Images, Convert WebP & AVIF * <= 6.3.4

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://research.cleantalk.org/CVE-2025-11378
https://github.com/short-pixel-optimizer/shortpixel-image...

CVSS V3.1

Score:
5.4
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Dmitrii Ignatyev
JSON
.
CVE-2025-11378 : Unauthorized Data Modification in ShortPixel Image Optimizer for WordPress