Vulnerability · Published Jun 11, 2026 · Assigned by GitHub_M
CVE-2026-46697Fediverse Embeds: Unauthenticated SSRF / open proxy via REST media-proxy endpoint
High 7.5
In plain English
A high-severity server-side request forgery in fediverse-embeds-wordpress-plugin from stefanbohacek. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 14% of all known vulnerabilities).
Official description
Fediverse Embeds embeds fediverse posts on WordPress sites. Prior to version 1.5.8, Fediverse Embeds registered an unauthenticated REST route ftf/media-proxy (includes/Media_Proxy.php) with permission_callback => __return_true that accepted a base64-encoded URL and forwarded it to wp_remote_get($url) without enforcing any allowlist. The plugin's source contained a comment block explicitly acknowledging that the request should be validated against allowed fediverse domains, but in 1.5.7 the validation only set a local $can_download_media flag that was never read. The full response body was echoed back to the caller, so this was a full-read SSRF / open proxy reachable by any anonymous visitor. This issue has been patched in version 1.5.8.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| stefanbohacek | fediverse-embeds-wordpress-plugin | < 1.5.8 |
Weakness: CWE-918 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N