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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.

PUBLISHED Reserved 2026-01-22 | Published 2026-02-12 | Updated 2026-02-12 | Assigner Wordfence




MEDIUM: 4.8CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

Problem types

CWE-918 Server-Side Request Forgery (SSRF)

Product status

Default status
unaffected

* (semver)
affected

Timeline

2026-01-22:Vendor Notified
2026-02-11:Disclosed

Credits

Lucas Montes finder

References

www.wordfence.com/...-2955-4b0c-ae1c-b42c0f60b73b?source=cve

plugins.trac.wordpress.org/...45904/webp-converter-for-media

cve.org (CVE-2026-1356)

nvd.nist.gov (CVE-2026-1356)

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