What is CVE-2023-3226?

CVE-2023-3226 is a medium-severity vulnerability in Sygnoos Popup Builder, classified under CWE-79 CROSS-SITE SCRIPTING (XSS). CVSS score: 4.8/10. Published 2023-09-25.

How severe is CVE-2023-3226?

Medium severity. CVSS v3 base score is 4.8 out of 10.

Is CVE-2023-3226 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Sygnoos Popup Builder

CVE-2023-3226

The Popup Builder WordPress plugin before 4.2.0 does not sanitise and escape some of its settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed (for example in multisite setup).

Published 2023-09-25 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.004 (36.4th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 36th percentile — 36.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: +0.001

Affected products

Sygnoos Popup Builder
Popup Builder — versions 0

Public proof-of-concept exploits

References

wpscan.com/vulnerability/941a9aa7-f4b2-474a-84d9-9a74c99079e2 (Exploit, technical-description, Third Party Advisory, exploit, vdb-entry)

Frequently asked questions

What is CVE-2023-3226?: CVE-2023-3226 is a medium-severity vulnerability in Sygnoos Popup Builder, classified under CWE-79 CROSS-SITE SCRIPTING (XSS). CVSS score: 4.8/10. Published 2023-09-25.
How severe is CVE-2023-3226?: Medium severity. CVSS v3 base score is 4.8 out of 10.
Is CVE-2023-3226 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.