CVE-2026-46697 Fediverse Embeds: Unauthenticated SSRF / open proxy via REST media-proxy endpoint
An unauthenticated attacker can exploit an SSRF vulnerability in the Fediverse Embeds WordPress plugin to read internal resources or use the site as an open proxy.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-46697?
CVE-2026-46697 is a high-severity server-side request forgery vulnerability in stefanbohacek fediverse-embeds-wordpress-plugin, published on 11 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
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.
Weakness: CWE-918
Which versions are affected by CVE-2026-46697?
How do I fix CVE-2026-46697?
No fix has been published for CVE-2026-46697 yet. Limit exposure of the affected software until one is available.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2026-46697 being exploited?
There is no known exploitation of CVE-2026-46697 in the wild and no public exploit code.
Sources
Also known as GHSA-mpq6-hjh3-m543.