What is CVE-2022-3831?

CVE-2022-3831 is a medium-severity vulnerability in Recaptcha Project, classified under CWE-79 CROSS-SITE SCRIPTING (XSS). CVSS score: 4.8/10. Published 2022-11-28.

How severe is CVE-2022-3831?

Medium severity. CVSS v3 base score is 4.8 out of 10.

Is CVE-2022-3831 known to be exploited?

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

Vulnerability in Recaptcha Project

CVE-2022-3831

The reCAPTCHA WordPress plugin through 1.6 does not sanitise and escape some of its settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed (for example in multisite setup).

Published 2022-11-28 · last modified 2026-06-17.

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 (44.6th percentile), scored 2026-10-04.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 45th percentile — 44.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.006 · change: +0.000

Affected products

Recaptcha Project
Recaptcha — versions 0

Public proof-of-concept exploits

20142995/nuclei-templates

References

wpscan.com/vulnerability/fa23bd68-69f3-440e-902c-a3bb6c8a40b8 (Exploit, technical-description, Third Party Advisory, exploit)

Frequently asked questions

What is CVE-2022-3831?: CVE-2022-3831 is a medium-severity vulnerability in Recaptcha Project, classified under CWE-79 CROSS-SITE SCRIPTING (XSS). CVSS score: 4.8/10. Published 2022-11-28.
How severe is CVE-2022-3831?: Medium severity. CVSS v3 base score is 4.8 out of 10.
Is CVE-2022-3831 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.