What is CVE-2023-5343?

CVE-2023-5343 is a medium-severity vulnerability in Ays-Pro Popup Box, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2023-11-20.

How severe is CVE-2023-5343?

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

Is CVE-2023-5343 known to be exploited?

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

XSS in Ays-Pro Popup Box

CVE-2023-5343

The Popup box WordPress plugin before 3.7.9 does not sanitise and escape some of its settings, which could allow high privilege users such as admin to perform Cross-Site Scripting attacks even when unfiltered_html is disallowed.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2023-11-20 · 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: 0.005 (36.7th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 37th percentile — 36.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

Ays-Pro Popup Box
Popup Box — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

20142995/nuclei-templates

References

wpscan.com/vulnerability/74613b38-48f2-43d5-bae5-25c89ba7db6e (Exploit, technical-description, Third Party Advisory, exploit, vdb-entry)

Frequently asked questions

What is CVE-2023-5343?: CVE-2023-5343 is a medium-severity vulnerability in Ays-Pro Popup Box, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2023-11-20.
How severe is CVE-2023-5343?: Medium severity. CVSS v3 base score is 4.8 out of 10.
Is CVE-2023-5343 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.