How severe is CVE-2021-25066?

CVE-2021-25066 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-2021-25066 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-25066?

CVE-2021-25066 affects Ninjaforms Ninja Forms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-25066?

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

When was CVE-2021-25066 published?

CVE-2021-25066 was published on 2022-07-04 and last updated on 2026-06-17.

CVE-2021-25066

CVE-2021-25066 is a medium-severity vulnerability in Ninjaforms Ninja Forms 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. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 4.8)
CVSS v2: 3.5
EPSS exploit prediction: 1% (42nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Ninjaforms Ninja Forms
Published: 2022-07-04
Last modified: 2026-06-17

Description

The Ninja Forms Contact Form WordPress plugin before 3.6.10 does not sanitize and escape some imported data, allowing high privilege users to perform Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed.

Frequently asked questions

What is CVE-2021-25066?: The Ninja Forms Contact Form WordPress plugin before 3.6.10 does not sanitize and escape some imported data, allowing high privilege users to perform Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed.
How severe is CVE-2021-25066?: CVE-2021-25066 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-2021-25066 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-25066?: CVE-2021-25066 affects Ninjaforms Ninja Forms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-25066?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-25066 published?: CVE-2021-25066 was published on 2022-07-04 and last updated on 2026-06-17.

References

https://wpscan.com/vulnerability/323d5fd0-abe8-44ef-9127-eea6fd4f3f3d

Affected products (1)

cpe:2.3:a:ninjaforms:ninja_forms:*:*:*:*:*:wordpress:*:*

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