CVE-2024-8628: The Popup, Optin Form & Email Newsletters for Mailchimp, HubSpot, AWeber – MailOptin plugin for WordPress is v

Q: How do I fix CVE-2024-8628?

mailoptin: upgrade to 1.2.70.4. Exact commands for each OS are on this page.

Q: Is CVE-2024-8628 being exploited?

CVE-2024-8628 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-2024-8628 affect?

CVE-2024-8628 affects mailoptin. Severity is medium (CVSS 5.4). The Popup, Optin Form & Email Newsletters for Mailchimp, HubSpot, AWeber – MailOptin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'post-meta' shortcode in all versions up to, and including, 1.2.70.3 due

Q: How urgent is CVE-2024-8628?

Priority 24/100. No elevated risk signals yet.

Routine

MEDIUM 5.4UPGRADE

CVE-2024-8628 is a medium-severity flaw (CVSS 5.4) affecting mailoptin. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The Popup, Optin Form & Email Newsletters for Mailchimp, HubSpot, AWeber – MailOptin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'post-meta' shortcode in all versions up to, and including, 1.2.70.3 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	5.4 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	0.3% (top 80%)
CISA exploited list	No
Weakness	CWE-79
Published	2024-09-24
Last modified	2026-06-17

Publisher (CNA): Wordfence · Vendor: mailoptin

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

Am I affected?

Timeline

2024-09-24 03:15 UTCPublished CVE record published
2026-06-17 08:23 UTCUpdated Record last modified

mailoptin mailoptin UPGRADE

Affected: < 1.2.70.4

Fixed in: 1.2.70.4

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 1.2.70.4 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade mailoptin

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-2024-8628?

mailoptin: upgrade to 1.2.70.4. Exact commands for each OS are on this page.

Is CVE-2024-8628 being exploited?

CVE-2024-8628 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-2024-8628 affect?

CVE-2024-8628 affects mailoptin. Severity is medium (CVSS 5.4). The Popup, Optin Form & Email Newsletters for Mailchimp, HubSpot, AWeber – MailOptin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'post-meta' shortcode in all versions up to, and including, 1.2.70.3 due

How urgent is CVE-2024-8628?

Priority 24/100. No elevated risk signals yet.

Software pages

WordPress vulnerabilities

References

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