CVE-2026-1356
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Server-Side Request Forgery in WordPress Image Converter Plugin

Publication date: 2026-02-12

Last updated on: 2026-02-12

Assigner: Wordfence

Description
The Converter for Media – Optimize images | Convert WebP & AVIF plugin for WordPress is vulnerable to Server-Side Request Forgery in all versions up to, and including, 6.5.1 via the PassthruLoader::load_image_source function. This makes it possible for unauthenticated attackers to make web requests to arbitrary locations originating from the web application and can be used to query and modify information from internal services.
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Meta Information
Published
2026-02-12
Last Modified
2026-02-12
Generated
2026-06-16
AI Q&A
2026-02-12
EPSS Evaluated
2026-06-14
NVD
CVE-2026-1356
EUVD
EUVD-2026-7040
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
wordpress webp_converter_for_media to 6.5.1 (inc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-918 The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.
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Executive Summary

The Converter for Media – Optimize images | Convert WebP & AVIF plugin for WordPress has a Server-Side Request Forgery (SSRF) vulnerability in all versions up to and including 6.5.1. This vulnerability exists in the PassthruLoader::load_image_source function.

SSRF allows unauthenticated attackers to make web requests to arbitrary locations from the web application itself.

This means attackers can potentially query and modify information from internal services that are normally not accessible externally.

Impact Analysis

This vulnerability can allow attackers to make unauthorized requests from your web server to internal or external systems.

Such unauthorized requests can lead to information disclosure or modification of internal services that are not intended to be exposed.

Because the attacker does not need to be authenticated, this increases the risk of exploitation.

The CVSS score of 4.8 indicates a medium severity impact with potential confidentiality and integrity loss but no impact on availability.

Compliance Impact

I don't know

Detection Guidance

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Mitigation Strategies

To mitigate this vulnerability, you should update the Converter for Media – Optimize images | Convert WebP & AVIF plugin for WordPress to version 6.5.2 or later, as this version includes a comprehensive update addressing the issue.

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