The site-offline plugin before 1.4.4 for WordPress lacks certain wp_create_nonce and wp_verify_nonce calls, aka CSRF.
Conclusion & alert: CVE-2020-35773 is rated High Exploit Risk (62.1/100): CVSS High severity, with low exploitation likelihood (EPSS 0.14%). Core evidence: 1 public exploit reference(s) are indexed (Exploit-DB). Mandatory action: Public exploits are available—assess exposure, apply mitigations, and prioritize patching.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
| EDB-ID | Source | Kind | Published | Link |
|---|---|---|---|---|
| — | nvd_ref | exploit_tag | Exploit-DB ↗ |
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2025-07-21 | 0.18% | 0.14% | -0.04% |
| 2 | 2025-03-30 | 4.33% | 0.18% | -4.15% |
| 3 | 2025-03-29 | — | 4.33% | — |
Full EPSS history (12 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 8.8 | 3.1 | HIGH |
|
2.8 | 5.9 | [email protected] |
| 6.8 | 2.0 | MEDIUM |
|
8.6 | 6.4 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| freehtmldesigns | site_offline | < 1.4.4 | cpe:2.3:a:freehtmldesigns:site_offline:*:*:*:*:*:wordpress:*:* |
| URL | Tags |
|---|---|
| https://advisory.checkmarx.net/advisory/CX-2020-4292 | Exploit Third Party Advisory |
| https://developer.wordpress.org/reference/functions/wp_create_nonce/ | Third Party Advisory |
| https://developer.wordpress.org/reference/functions/wp_verify_nonce/ | Third Party Advisory |
| https://plugins.trac.wordpress.org/changeset/2445009/ | Patch Third Party Advisory |
| https://wordpress.org/plugins/site-offline/#developers | Product Third Party Advisory |