cvedb.io
CVE-2026-5217
HIGH · CVSS 7.2
EPSS exploitation probability: 0%
Published 2026-04-11T02:16:02.953 · Last modified 2026-06-17T10:58:38.057

Summary

The Optimole – Optimize Images | Convert WebP & AVIF | CDN & Lazy Load | Image Optimization plugin for WordPress is vulnerable to Stored Cross-Site Scripting in all versions up to, and including, 4.2.2. This is due to insufficient input sanitization and output escaping on the user-supplied 's' parameter (srcset descriptor) in the unauthenticated /wp-json/optimole/v1/optimizations REST endpoint. The endpoint validates requests using an HMAC signature and timestamp, but these values are exposed directly in the frontend HTML making them accessible to any visitor. The plugin uses sanitize_text_field() on the descriptor value of rest.php, which strips HTML tags but does not escape double quotes. The poisoned descriptor is then stored via transients (backed by the WordPress options table) and la

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.