Fediverse Embeds CVEs and Security Vulnerabilities

CVE-2026-12516

Fediverse Embeds < 1.5.8 - Unauthenticated SSRF via Media Proxy

The Fediverse Embeds WordPress plugin before 1.5.8 does not validate the destination of the server-side request performed by an unauthenticated media-proxying endpoint, allowing anonymous users to make the site fetch arbitrary URLs, including internal and private-network addresses, and read back the response body. This results in a full-read Server-Side Request Forgery and open proxy.

CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed

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Wordpress-extensions

Products

Fediverse Embeds

CVE-2026-12517

Fediverse Embeds < 1.5.8 - Unauthenticated SSRF via Site Info Endpoint

The Fediverse Embeds WordPress plugin before 1.5.8 does not validate the destination of the server-side request performed by an unauthenticated site-info endpoint before fetching it, allowing anonymous users (the gating nonce is exposed on public pages carrying an embed) to make the site request internal and private-network URLs and read back the parsed page metadata. This is a Server-Side Request Forgery.