What is CVE-2026-13604?

CVE-2026-13604 is a medium-severity vulnerability in Pixelavo, classified under Server-Side Request Forgery (SSRF). CVSS score: 5.3/10. Published 2026-08-01.

How severe is CVE-2026-13604?

Medium severity. CVSS v3 base score is 5.3 out of 10.

SSRF in Pixelavo

CVE-2026-13604

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.

Vulnerability class: SSRF (Server-Side Request Forgery)

EPSS: 0.002 (6.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.

Affected products

Unknown Pixelavo — versions 0

Weakness classification (CWE)

CWE-918 — Server-Side Request Forgery (SSRF)

References

contact@wpscan.com (technical-description, exploit, vdb-entry)

Frequently asked questions

What is CVE-2026-13604?: CVE-2026-13604 is a medium-severity vulnerability in Pixelavo, classified under Server-Side Request Forgery (SSRF). CVSS score: 5.3/10. Published 2026-08-01.
How severe is CVE-2026-13604?: Medium severity. CVSS v3 base score is 5.3 out of 10.