CVE-2026-12516 — 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 media-proxying endpoint, allowing anonymous users to make the site fetch arbitrary URLs, including internal and private-network addresses, and read back the response body. This results in a full-read Server-Side Request Forgery and open proxy.

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/2ac80164-03b7-4966-b022-833b4194de80/

FAQ

What is CVE-2026-12516?

CVE-2026-12516 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 media-proxying endpoint, allowing anonymous users to mak...

How severe is CVE-2026-12516?

CVE-2026-12516 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-2026-12516?

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