How severe is CVE-2024-8628?

CVE-2024-8628 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2024-8628 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (18th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-8628?

CVE-2024-8628 affects Mailoptin. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-8628?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2024-8628 have an EU (EUVD) identifier?

Yes. CVE-2024-8628 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-49307.

When was CVE-2024-8628 published?

CVE-2024-8628 was published on 2024-09-24 and last updated on 2026-06-17.

CVE-2024-8628

CVE-2024-8628 is a medium-severity vulnerability in Mailoptin with a CVSS 3.x base score of 5.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
EPSS exploit prediction: 0% (18th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-49307
Weakness: CWE-79
Affected product: Mailoptin
Published: 2024-09-24
Last modified: 2026-06-17

Description

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 in pages that will execute whenever a user accesses an injected page.

Frequently asked questions

What is CVE-2024-8628?: 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 in pages that will execute whenever a user accesses an injected page.
How severe is CVE-2024-8628?: CVE-2024-8628 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2024-8628 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (18th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-8628?: CVE-2024-8628 affects Mailoptin. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-8628?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-8628 have an EU (EUVD) identifier?: Yes. CVE-2024-8628 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-49307.
When was CVE-2024-8628 published?: CVE-2024-8628 was published on 2024-09-24 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:mailoptin:mailoptin:*:*:*:*:*:wordpress:*:*

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