CVE-2023-32517: URL Redirection to Untrusted Site ('Open Redirect') vulnerability in PluginOps MailChimp Subscribe Form, Optin

Q: How do I fix CVE-2023-32517?

mailchimp: upgrade to 4.0.9.4. Exact commands for each OS are on this page.

Q: Is CVE-2023-32517 being exploited?

CVE-2023-32517 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2023-32517 affect?

CVE-2023-32517 affects mailchimp. Severity is medium (CVSS 4.7). URL Redirection to Untrusted Site ('Open Redirect') vulnerability in PluginOps MailChimp Subscribe Form, Optin Builder, PopUp Builder, Form Builder.This issue affects MailChimp Subscribe Form, Optin Builder, PopUp Builder, Form Builder: fro

Q: How urgent is CVE-2023-32517?

Priority 24/100. No elevated risk signals yet.

Routine

MEDIUM 4.7UPGRADE

CVE-2023-32517 is a medium-severity flaw (CVSS 4.7) affecting mailchimp. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

URL Redirection to Untrusted Site ('Open Redirect') vulnerability in PluginOps MailChimp Subscribe Form, Optin Builder, PopUp Builder, Form Builder.This issue affects MailChimp Subscribe Form, Optin Builder, PopUp Builder, Form Builder: from n/a through 4.0.9.3.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	4.7 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.4% (top 68%)
CISA exploited list	No
Weakness	CWE-601
Published	2023-12-29
Last modified	2026-06-17

Publisher (CNA): Patchstack · Vendor: ibericode

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-12-29 10:15 UTCPublished CVE record published
2026-06-17 05:59 UTCUpdated Record last modified

ibericode mailchimp UPGRADE

Affected: < 4.0.9.4

Fixed in: 4.0.9.4

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy mailchimp || rpm -q mailchimp || mailchimp --version

2. UPGRADE to 4.0.9.4 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade mailchimp

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade mailchimp

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-32517?

mailchimp: upgrade to 4.0.9.4. Exact commands for each OS are on this page.

Is CVE-2023-32517 being exploited?

CVE-2023-32517 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-32517 affect?

CVE-2023-32517 affects mailchimp. Severity is medium (CVSS 4.7). URL Redirection to Untrusted Site ('Open Redirect') vulnerability in PluginOps MailChimp Subscribe Form, Optin Builder, PopUp Builder, Form Builder.This issue affects MailChimp Subscribe Form, Optin Builder, PopUp Builder, Form Builder: fro

How urgent is CVE-2023-32517?

Priority 24/100. No elevated risk signals yet.

Related CVEs

CVE-2024-8850 MEDIUM 6.1 UPGRADE The MC4WP: Mailchimp for WordPress plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via th
CVE-2024-8680 MEDIUM 4.4 UPGRADE The MC4WP: Mailchimp for WordPress plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin
CVE-2023-51682 MEDIUM 5.3 UPGRADE Missing Authorization vulnerability in ibericode MC4WP.This issue affects MC4WP: from n/a through 4.9.9.
CVE-2015-5488 LOW 2.1 DOWNGRADE Cross-site scripting (XSS) vulnerability in the MailChimp Signup submodule in the MailChimp module 7.x-3.x bef
CVE-2012-5551 MEDIUM 4.3 DOWNGRADE Multiple cross-site scripting (XSS) vulnerabilities in the MailChimp module 7.x-2.x before 7.x-2.7 for Drupal

References

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