Vulnerability · Published Feb 12, 2026 · Assigned by Wordfence

CVE-2026-1356Converter for Media – Optimize images | Convert WebP & AVIF <= 6.5.1 - Unauthenticated Server-Side Request Forgery via src

Medium 4.8

In plain English

A medium-severity server-side request forgery in Converter for Media – Optimize images | Convert WebP & AVIF from mateuszgbiorczyk. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 18% of all known vulnerabilities).

Severity (CVSS 3.1)4.8Medium

Exploit odds (30 days)0.3%top 82.4% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
mateuszgbiorczyk	Converter for Media – Optimize images \| Convert WebP & AVIF	0 – through 6.5.1

Weakness: CWE-918 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

In plain English

Official description

Affected products (as reported)

References