CVE-2021-24574

4.8 mediumEPSS 0.7%

Medium (4.8) in simple banner project simple banner. EPSS 0.7% chance of exploitation in the next 30 days.

The Simple Banner WordPress plugin before 2.10.4 does not sanitise and escape one of its settings, allowing high privilege users such as admin to use Cross-Site Scripting payload even when the unfiltered_html capability is disallowed.

Severity

CVSS 3.1

4.8 medium

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

EPSS: 0.7% chance of exploitation in the next 30 days; higher than 52% of CVEs (scores of 2026-10-31)
CWE: CWE-79
Published: 2021-08-23
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

simple_banner_project:simple_banner

References

https://plugins.trac.wordpress.org/changeset/2571047/
https://wpscan.com/vulnerability/9adf7022-5108-43b7-bf0e-a42593185b74
https://plugins.trac.wordpress.org/changeset/2571047/
https://wpscan.com/vulnerability/9adf7022-5108-43b7-bf0e-a42593185b74

Check your stack JSON