How severe is CVE-2020-35489?

CVE-2020-35489 has a CVSS 3.x base score of 10.0, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-35489 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 90% (100th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-35489?

CVE-2020-35489 affects Rocklobster Contact Form 7. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-35489?

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

When was CVE-2020-35489 published?

CVE-2020-35489 was published on 2020-12-17 and last updated on 2026-06-17.

CVE-2020-35489

CVE-2020-35489 is a critical-severity vulnerability in Rocklobster Contact Form 7 with a CVSS 3.x base score of 10.0. Its EPSS exploit-prediction score of 90% places it in the 100th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-434.

Key facts

Severity: Critical (CVSS 3.x base score 10.0)
CVSS v2: 10.0
EPSS exploit prediction: 90% (100th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-434
Affected product: Rocklobster Contact Form 7
Published: 2020-12-17
Last modified: 2026-06-17

Description

The contact-form-7 (aka Contact Form 7) plugin before 5.3.2 for WordPress allows Unrestricted File Upload and remote code execution because a filename may contain special characters.

Frequently asked questions

What is CVE-2020-35489?: The contact-form-7 (aka Contact Form 7) plugin before 5.3.2 for WordPress allows Unrestricted File Upload and remote code execution because a filename may contain special characters.
How severe is CVE-2020-35489?: CVE-2020-35489 has a CVSS 3.x base score of 10.0, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-35489 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 90% (100th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-35489?: CVE-2020-35489 affects Rocklobster Contact Form 7. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-35489?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2020-35489 published?: CVE-2020-35489 was published on 2020-12-17 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:rocklobster:contact_form_7:*:*:*:*:*:wordpress:*:*

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