PatchSiren cyber security CVE debrief

CVE-2026-46698 stefanbohacek CVE debrief

CVE-2026-46698 is a vulnerability in the Fediverse Embeds WordPress plugin prior to version 1.5.9. The plugin registered an unauthenticated AJAX action `wp_ajax_nopriv_ftf_get_site_info` that verified a nonce `ftf-fediverse-embeds-nonce` and then called `file_get_html($site_url)` on an attacker-supplied URL. The nonce was enqueued onto every public page containing a fediverse embed, making it accessible to any visitor. This allowed an attacker to reuse the nonce and potentially exploit the vulnerability. The issue has been patched in version 1.5.9.

Vendor: stefanbohacek
Product: fediverse-embeds-wordpress-plugin
CVSS: MEDIUM 5.3
CISA KEV: Not listed in stored evidence
Original CVE published: 2026-06-11
Original CVE updated: 2026-06-11
Advisory published: 2026-06-11
Advisory updated: 2026-06-11

Who should care

Users of the Fediverse Embeds WordPress plugin prior to version 1.5.9 should update to the latest version to prevent potential exploitation of this vulnerability.

Technical summary

The Fediverse Embeds WordPress plugin prior to version 1.5.9 had an unauthenticated AJAX action `wp_ajax_nopriv_ftf_get_site_info` that verified a nonce `ftf-fediverse-embeds-nonce` and then called `file_get_html($site_url)` on an attacker-supplied URL. The CVSS score for this vulnerability is 5.3, with a severity rating of MEDIUM.

Defensive priority

MEDIUM

Recommended defensive actions

Update to version 1.5.9 or later

Evidence notes

The CVE-2026-46698 vulnerability was patched in version 1.5.9 of the Fediverse Embeds WordPress plugin. The [cve-org] CVE record and [nvd] NVD detail provide additional information on this vulnerability.

Sources and references

Verified primary and authoritative sources

CVE-2026-46698 CVE Program record
Publisher, destination, and source semantics verified

URL: https://www.cve.org/CVERecord?id=CVE-2026-46698

CVE Program - Official CVE Program record with source-provided CVE metadata.
CVE-2026-46698 NVD vulnerability detail
Publisher, destination, and source semantics verified

URL: https://nvd.nist.gov/vuln/detail/CVE-2026-46698

NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Source reference
Unverified legacy reference

URL: https://github.com/stefanbohacek/fediverse-embeds-wordpress-plugin/commit/93821405790ccc7a80528e91b34b624606b54969

[email protected]
Source reference
Unverified legacy reference

URL: https://github.com/stefanbohacek/fediverse-embeds-wordpress-plugin/security/advisories/GHSA-cr42-rgq6-whjh

[email protected]

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.