What’s Vulnerable › Vulnerabilities

CVE-2021-24592: Sitewide Notice WP < 2.3 - Authenticated Stored XSS

• Severity: medium (CVSS 4.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-08-30 · updated 2026-06-17
• Weakness: CWE-79

Description

The Sitewide Notice WP WordPress plugin before 2.3 does not sanitise some of its settings before outputting them in frontend pages, allowing high privilege users to perform Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed

Affected products

• Sitewide Notice WP: before 2.3 — fixed in 2.3

How to fix

Upgrade to a fixed version: Sitewide Notice WP 2.3. Check the vendor advisory for mitigations.

References

• https://wpscan.com/vulnerability/9579ff13-9597-4a77-8cb9-997e35265d22
• https://wpscan.com/vulnerability/9579ff13-9597-4a77-8cb9-997e35265d22

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