CVE-2023-5809: Popup box < 3.8.6 - Admin+ Stored XSS in Categories

Severity: medium (CVSS 4.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2023-12-04 · updated 2026-06-17
Weakness: CWE-79

Description

The Popup box WordPress plugin before 3.8.6 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)

Affected products

Ays Pro Popup box: before 3.8.6 — fixed in 3.8.6

How to fix

Upgrade to a fixed version: Ays Pro Popup box 3.8.6. Check the vendor advisory for mitigations.

References

https://wpscan.com/vulnerability/f1eb05e8-1b7c-45b1-912d-f668bd68e265
https://wpscan.com/vulnerability/f1eb05e8-1b7c-45b1-912d-f668bd68e265

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