What’s Vulnerable › Vulnerabilities

CVE-2020-35773

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2020-12-29 · updated 2026-06-17
• Weakness: CWE-352

Description

The site-offline plugin before 1.4.4 for WordPress lacks certain wp_create_nonce and wp_verify_nonce calls, aka CSRF.

Affected products

• Site Offline Or Coming Soon Or Maintenance Mode: before 1.4.4 — fixed in 1.4.4

How to fix

Upgrade to a fixed version: Site Offline Or Coming Soon Or Maintenance Mode 1.4.4. Check the vendor advisory for mitigations.

References

• https://advisory.checkmarx.net/advisory/CX-2020-4292
• https://developer.wordpress.org/reference/functions/wp_create_nonce/
• https://developer.wordpress.org/reference/functions/wp_verify_nonce/
• https://plugins.trac.wordpress.org/changeset/2445009/
• https://wordpress.org/plugins/site-offline/#developers
• https://advisory.checkmarx.net/advisory/CX-2020-4292
• https://developer.wordpress.org/reference/functions/wp_create_nonce/
• https://developer.wordpress.org/reference/functions/wp_verify_nonce/
• https://plugins.trac.wordpress.org/changeset/2445009/
• https://wordpress.org/plugins/site-offline/#developers

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