XSS in Ninjaforms Ninja Forms

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.

Vulnerability class: XSS (Cross-Site Scripting)

Published · last modified .

CVSS v3 metric

CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.006 (46.0th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 46th percentile — 46.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2021-25066: held from 0.006 to 0.006.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: +0.000

Affected products

  • Ninjaforms Ninja Forms
  • Ninja Forms Contact Form – The Drag And Drop Builder For WordPress — versions 3.6.10

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2021-25066?
CVE-2021-25066 is a medium-severity vulnerability in Ninjaforms Ninja Forms, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2022-07-04.
How severe is CVE-2021-25066?
Medium severity. CVSS v3 base score is 4.8 out of 10.
Is CVE-2021-25066 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.