Vulnerability in ShortPixel Image Optimizer – Optimize Images, Convert WebP & AVIF — CVE-2026-103070

What to do now

Update ShortPixel Image Optimizer – Optimize Images, Convert WebP & AVIF to 6.6.0 or later.

Affected versions

• Everything up to and including 6.5.6

The ShortPixel Image Optimizer – Optimize Images, Convert WebP & AVIF plugin for WordPress is vulnerable to Stored Cross-Site Scripting in all versions up to, and including, 6.5.6. This is due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

This description is reproduced verbatim from the public vulnerability record.

• https://www.wordfence.com/threat-intel/vulnerabilities/id/35d36566-8f07-436b-88e6-e83c2787d29e?source=api-prod

Part of this record comes from Wordfence Intelligence. Original: https://www.wordfence.com/threat-intel/vulnerabilities/id/35d36566-8f07-436b-88e6-e83c2787d29e
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