CVE-2025-6626
ShortPixel Adaptive Images – WebP, AVIF, CDN, Image Optimization <= 3.10.4 - Authenticated (Administrator+) Stored Cross-Site Scripting via API URL
CVSS Score
4.4
EPSS Score
0.0%
EPSS Percentile
0th
The ShortPixel Adaptive Images – WebP, AVIF, CDN, Image Optimization plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the API URL Setting in all versions up to, and including, 3.10.3 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level access, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.
| CWE | CWE-79 |
| Vendor | shortpixel |
| Product | shortpixel adaptive images – webp, avif, cdn, image optimization |
| Published | Aug 2, 2025 |
| Last Updated | Apr 8, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
shortpixel / ShortPixel Adaptive Images – WebP, AVIF, CDN, Image Optimization
0 ≤ 3.10.4
References
wordfence.com: https://www.wordfence.com/threat-intel/vulnerabilities/id/56ab6429-4b1b-461a-9fcd-b4be84985118?source=cve plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/shortpixel-adaptive-images/tags/3.10.4/includes/front/vanilla-js-loader.class.php#L48 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3337681%40shortpixel-adaptive-images&new=3337681%40shortpixel-adaptive-images&sfp_email=&sfph_mail=
Credits
Jonas Benjamin Friedli