CVE-2026-12517 — MEDIUM (5.3)

Vulnerability Description

The Fediverse Embeds WordPress plugin before 1.5.8 does not validate the destination of the server-side request performed by an unauthenticated site-info endpoint before fetching it, allowing anonymous users (the gating nonce is exposed on public pages carrying an embed) to make the site request internal and private-network URLs and read back the parsed page metadata. This is a Server-Side Request Forgery.

CVSS Score

5.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

LOW

Integrity

NONE

Availability

NONE

References

https://wpscan.com/vulnerability/460a996f-e27d-47e8-9d68-9e6be93100c0/

FAQ

What is CVE-2026-12517?

CVE-2026-12517 is a vulnerability with a CVSS score of 5.3 (MEDIUM). The Fediverse Embeds WordPress plugin before 1.5.8 does not validate the destination of the server-side request performed by an unauthenticated site-info endpoint before fetching it, allowing anonymou...

How severe is CVE-2026-12517?

CVE-2026-12517 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-12517?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.