What is CVE-2023-47545?

CVE-2023-47545 is a medium-severity vulnerability in Fatcat Apps Forms For Mailchimp By Optin Cat – Grow Your List, classified under Cross-site Scripting. CVSS score: 5.9/10. Published 2023-11-14.

How severe is CVE-2023-47545?

Medium severity. CVSS v3 base score is 5.9 out of 10.

Is CVE-2023-47545 known to be exploited?

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

XSS in Fatcat Apps Forms For Mailchimp By Optin Cat – Grow Your List

CVE-2023-47545

Auth. (editor+) Stored Cross-Site Scripting (XSS) vulnerability in Fatcat Apps Forms for Mailchimp by Optin Cat – Grow Your MailChimp List plugin <= 2.5.4 versions.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2023-11-14 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:L.

EPSS exploit prediction

EPSS: 0.004 (29.6th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 30th percentile — 29.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

References

patchstack.com/database/vulnerability/mailchimp-wp/wordpress-forms-for-mailchim… (Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2023-47545?: CVE-2023-47545 is a medium-severity vulnerability in Fatcat Apps Forms For Mailchimp By Optin Cat – Grow Your List, classified under Cross-site Scripting. CVSS score: 5.9/10. Published 2023-11-14.
How severe is CVE-2023-47545?: Medium severity. CVSS v3 base score is 5.9 out of 10.
Is CVE-2023-47545 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.