fediverse-embeds-wordpress-plugin: Server-side request forgery
fediverse-embeds-wordpress-plugin is affected by server-side request forgery. The vulnerable path is reachable without authentication. The vulnerable server can be induced to make attacker-selected network requests. The published affected range is < 1.5.8.
- Component
- fediverse-embeds-wordpress-plugin
- Plugin slug
- Not applicable
- Affected
- < 1.5.8
- Safe version
1.5.8- Published
- Jun 11, 2026
Update, patch or deactivate.
Update fediverse-embeds-wordpress-plugin to 1.5.8 or later, or disable and remove it until a fixed version is available.
A safe version is available, so updating to that version or later is the preferred remediation. If an immediate update is not practical, consider a targeted application patch or temporarily restricting the affected functionality.
Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.
Technical 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.
CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N