What is CVE-2023-1835?

CVE-2023-1835 is a medium-severity vulnerability in Ninjaforms Ninja Forms, classified under CWE-79 CROSS-SITE SCRIPTING (XSS). CVSS score: 6.1/10. Published 2023-05-15.

How severe is CVE-2023-1835?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Is CVE-2023-1835 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Ninjaforms Ninja Forms

CVE-2023-1835

The Ninja Forms Contact Form WordPress plugin before 3.6.22 does not properly escape user input before outputting it back in an admin page, leading to a Reflected Cross-Site Scripting which could be used against high privilege users such as admin

Published 2023-05-15 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.009 (58.9th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 59th percentile — 58.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

Ninjaforms Ninja Forms
Ninja Forms Contact Form — versions 0

Public proof-of-concept exploits

20142995/nuclei-templates

References

wpscan.com/vulnerability/b5fc223c-5ec0-44b2-b2f6-b35f9942d341 (Exploit, technical-description, exploit, vdb-entry)

Frequently asked questions

What is CVE-2023-1835?: CVE-2023-1835 is a medium-severity vulnerability in Ninjaforms Ninja Forms, classified under CWE-79 CROSS-SITE SCRIPTING (XSS). CVSS score: 6.1/10. Published 2023-05-15.
How severe is CVE-2023-1835?: Medium severity. CVSS v3 base score is 6.1 out of 10.
Is CVE-2023-1835 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.