Fediverse Embeds: Unauthenticated SSRF / open proxy via REST media-proxy endpoint
CVE-2026-46697

7.5HIGH

Key Information:

Vendor

WordPress
Status
Fediverse-embeds-WordPress-plugin
Vendor
CVE Published:
11 June 2026

What is CVE-2026-46697?

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 Version(s)

fediverse-embeds-wordpress-plugin < 1.5.8

References

https://github.com/stefanbohacek/fediverse-embeds-wordpre...
x_refsource_CONFIRM
https://github.com/stefanbohacek/fediverse-embeds-wordpre...
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CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.