Converter for Media <= 6.3.2 - Missing Authorization to Authenticated (Subscriber+) Optimized Image Deletion via regenerate-attachment REST Endpoint
| CVE | CVE-2025-13750 |
|---|---|
| CVSS | 4.3 (Medium) |
| Publicly Published | December 16, 2025 |
| Last Updated | December 17, 2025 |
| Researcher |
Marcin Dudek (dudekmar)
- CERT.PL
|
Description
The Converter for Media – Optimize images | Convert WebP & AVIF plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the `/webp-converter/v1/regenerate-attachment` REST endpoint in all versions up to, and including, 6.3.2. This makes it possible for authenticated attackers, with Subscriber-level access and above, to delete optimized WebP/AVIF variants for arbitrary attachments.
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Vulnerability Details for Converter for Media – Optimize images | Convert WebP & AVIF
| Software Type | Plugin |
|---|---|
| Software Slug | webp-converter-for-media (view on wordpress.org) |
| Patched? | Yes |
| Remediation | Update to version 6.4.0, or a newer patched version |
| Affected Version |
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| Patched Version |
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Recent vulnerabilities in Converter for Media – Optimize images | Convert WebP & AVIF
| # | Title | CVE ID | CVSS | Researchers | Date |
|---|---|---|---|---|---|
| 1 | Converter for Media – Optimize images | Convert WebP & AVIF <= 6.5.1 - Unauthenticated Server-Side Request Forgery via src | CVE-2026-1356 | Lucas Montes (NiRoX) | February 11, 2026 | |
| 2 | WebP Converter for Media <= 4.0.2 - Unauthenticated Open Redirect | CVE-2021-25074 | Krzysztof Zając | December 27, 2021 | |
| 3 | WebP Converter for Media – Convert WebP and AVIF & Optimize Images <= 1.0.2 - Cross-Site Request Forgery | CVE-2019-15834 | June 27, 2019 |
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