Fediverse Embeds: Public-nonce SSRF via ftf_get_site_info AJAX action
CVE-2026-46698

5.3MEDIUM

Key Information:

Vendor

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

What is CVE-2026-46698?

Fediverse Embeds embeds fediverse posts on WordPress sites. Prior to version 1.5.9, Fediverse Embeds registered the unauthenticated AJAX action wp_ajax_nopriv_ftf_get_site_info (includes/Site_Info.php) that verified a nonce ftf-fediverse-embeds-nonce and then called file_get_html($site_url) on the attacker-supplied URL. The same nonce was enqueued onto every public page containing a fediverse embed (via includes/Enqueue_Assets.php lines 41-46 + includes/Helpers.php lines 64-83), so the nonce gate was not an authentication boundary; any visitor of a public post with an embed could grab it and reuse it. This issue has been patched in version 1.5.9.

Affected Version(s)

fediverse-embeds-wordpress-plugin < 1.5.9

References

https://github.com/stefanbohacek/fediverse-embeds-wordpre...
x_refsource_CONFIRM
https://github.com/stefanbohacek/fediverse-embeds-wordpre...
x_refsource_MISC

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.