CVE-2026-13604 — MEDIUM (5.3)

Vulnerability Description

The Pixelavo WordPress plugin before 1.5.4 registers an unauthenticated AJAX action, gated only by a nonce that it emits publicly on every front-end page, that forwards client-supplied event data to the configured Facebook Conversions API using the administrator's stored access token. This allows an unauthenticated visitor to inject arbitrary conversion events into the administrator's Facebook ads account and exhaust the configured API quota.

CVSS Score

5.3

MEDIUM

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

LOW

Availability

NONE

Related Weaknesses (CWE)

CWE-918

References

https://wpscan.com/vulnerability/766c961e-e5aa-4ebe-8107-032f46316f91/

FAQ

What is CVE-2026-13604?

CVE-2026-13604 is a vulnerability with a CVSS score of 5.3 (MEDIUM). The Pixelavo WordPress plugin before 1.5.4 registers an unauthenticated AJAX action, gated only by a nonce that it emits publicly on every front-end page, that forwards client-supplied event data to ...

How severe is CVE-2026-13604?

CVE-2026-13604 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-2026-13604?

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