CVE-2021-24574

MEDIUM
Published Aug 23, 20214y ago · Modified Jun 17, 20262w ago
4.8 CVSS 3.1
Medium
Find Similar
Published Aug 23, 2021 4y ago
Last Modified Jun 17, 2026 2w ago

Description

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.

CVSS Details

Base Score
4.8
Exploitability
1.7
Impact
2.7
Vector string
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required High
User Interaction Required
Scope Changed
Confidentiality Low
Integrity Low
Availability None

Threat Intelligence

No active exploitation signals — not in CISA KEV and no EPSS score yet.

Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 1

CWE-79 Cross-site Scripting Injection

Affected Products 1

VendorProductVersionRange
simple_banner_projectsimple_banner* <2.10.4

References 2

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

Remediation