How severe is CVE-2023-4109?

CVE-2023-4109 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2023-4109 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-4109?

CVE-2023-4109 affects Ninjaforms Ninja Forms Contact Form. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-4109?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2023-4109 published?

CVE-2023-4109 was published on 2023-08-30 and last updated on 2026-06-17.

CVE-2023-4109

CVE-2023-4109 is a medium-severity vulnerability in Ninjaforms Ninja Forms Contact Form with a CVSS 3.x base score of 4.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 3.x base score 4.8)
EPSS exploit prediction: 0% (30th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Ninjaforms Ninja Forms Contact Form
Published: 2023-08-30
Last modified: 2026-06-17

Description

The Ninja Forms WordPress Ninja Forms Contact Form WordPress plugin before 3.6.26 was affected by a HTML Injection security vulnerability.

Frequently asked questions

What is CVE-2023-4109?: The Ninja Forms WordPress Ninja Forms Contact Form WordPress plugin before 3.6.26 was affected by a HTML Injection security vulnerability.
How severe is CVE-2023-4109?: CVE-2023-4109 has a CVSS 3.x base score of 4.8, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2023-4109 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-4109?: CVE-2023-4109 affects Ninjaforms Ninja Forms Contact Form. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-4109?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-4109 published?: CVE-2023-4109 was published on 2023-08-30 and last updated on 2026-06-17.

References

https://wpscan.com/vulnerability/558e06ab-704b-4bb1-ba7f-b5f6bbbd68d9

Affected products (1)

cpe:2.3:a:ninjaforms:ninja_forms_contact_form:*:*:*:*:*:wordpress:*:*