CVE-2025-13750
Unknown Unknown - Not Provided
Unauthorized Data Modification in WebP Converter WordPress Plugin

Publication date: 2025-12-17

Last updated on: 2025-12-17

Assigner: Wordfence

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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Meta Information
Published
2025-12-17
Last Modified
2025-12-17
Generated
2026-06-16
AI Q&A
2025-12-17
EPSS Evaluated
2026-06-15
NVD
CVE-2025-13750
EUVD
EUVD-2025-203883
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
wordpress webp_converter_for_media 6.3.2
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-862 The product does not perform an authorization check when an actor attempts to access a resource or perform an action.
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Executive Summary

This vulnerability exists in the Converter for Media – Optimize images | Convert WebP & AVIF plugin for WordPress, where a missing capability check on the /webp-converter/v1/regenerate-attachment REST endpoint allows authenticated users with Subscriber-level access or higher to delete optimized WebP and AVIF image variants for arbitrary attachments. Essentially, users who should have limited permissions can modify or delete optimized image data without proper authorization.

Impact Analysis

The vulnerability allows attackers with Subscriber-level access or above to delete optimized WebP/AVIF image variants for any attachments. This could lead to loss of optimized images, potentially degrading website performance and user experience due to missing optimized media files. Although it does not impact confidentiality or availability directly, it impacts the integrity of media data by allowing unauthorized modification.

Mitigation Strategies

To mitigate this vulnerability, immediately update the Converter for Media – Optimize images | Convert WebP & AVIF plugin for WordPress to a version later than 6.3.2, such as 6.4.0 or newer, which includes significant architectural and functional enhancements. Additionally, restrict Subscriber-level user permissions to prevent unauthorized access to the vulnerable REST endpoint `/webp-converter/v1/regenerate-attachment` until the update is applied. [2]

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