How severe is CVE-2020-35773?

CVE-2020-35773 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-35773 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-35773?

CVE-2020-35773 affects Freehtmldesigns Site Offline. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-35773?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2020-35773 published?

CVE-2020-35773 was published on 2020-12-29 and last updated on 2026-06-17.

CVE-2020-35773

CVE-2020-35773 is a high-severity vulnerability in Freehtmldesigns Site Offline with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-352.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.8
EPSS exploit prediction: 1% (58th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-352
Affected product: Freehtmldesigns Site Offline
Published: 2020-12-29
Last modified: 2026-06-17

Description

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

Frequently asked questions

What is CVE-2020-35773?: The site-offline plugin before 1.4.4 for WordPress lacks certain wp_create_nonce and wp_verify_nonce calls, aka CSRF.
How severe is CVE-2020-35773?: CVE-2020-35773 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-35773 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-35773?: CVE-2020-35773 affects Freehtmldesigns Site Offline. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-35773?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2020-35773 published?: CVE-2020-35773 was published on 2020-12-29 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:freehtmldesigns:site_offline:*:*:*:*:*:wordpress:*:*

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