CVE-2026-46697
HighCVSS 7.5Exploitation Probability (EPSS)
Low risk10th percentile - higher than 10% of all known CVEs
Summary
The Fediverse Embeds plugin prior to version 1.5.8 registered an unauthenticated REST route that accepted a base64-encoded URL and forwarded it to wp_remote_get without enforcing an allowlist. Version 1.5.7 did not validate the request, leading to the potential for full data read by anonymous users.
Risk Assessment
Organizations may be exposed to SSRF attacks and open proxy vulnerabilities, which could lead to data leaks or unauthorized access to internal resources.
Recommendation
It is recommended to update the plugin to version 1.5.8 or later to mitigate this vulnerability and implement additional security measures to protect against unauthorized access.
Original NVD description (English source)
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.