Software intelligence
Important: Mailoptin appearing in this catalog does not mean your website is affected. Exposure depends on your installed version. How SiteRespond intelligence works
Tracked advisories
7
Latest advisory
29 July 2026
CISA KEV matches
0
In this WordPress feed
WordPress slug
mailoptin
Plugin
This catalog lists 7 known advisories affecting Mailoptin. The most recent was published on 29 July 2026. If you use this software, compare your installed version against the affected ranges on each advisory and update to a fixed release outside those ranges. SiteRespond Defence checks your actual installed version when the plugin is connected — listing here does not by itself mean your site is vulnerable.
MailOptin – Popup, Optin Forms & Email Newsletters for Mailchimp, HubSpot, AWeber Etc. <= 1.2.78.0 - Authenticated (Contributor+) Stored Cross-Site Scripting
May allow attackers to run scripts in visitors' browsers or hijack admin sessions.
Published 29 July 2026
MailOptin – Popup, Optin Forms & Email Newsletters for Mailchimp, HubSpot, AWeber Etc. <= 1.2.77.3 - Unauthenticated Privilege Escalation
May allow a lower-privilege user to perform actions reserved for administrators.
Published 9 July 2026
MailOptin <= 1.2.75.0 - Authenticated (Administrator+) Stored Cross-Site Scripting
May allow attackers to run scripts in visitors' browsers or hijack admin sessions.
Published 3 September 2025
Known Mailoptin advisories published by month.
CVE-2026-66703 · Published 29 July 2026
Affected versions: ≤ 1.2.78.0
CVE-2026-57813 · Published 9 July 2026
Affected versions: ≤ 1.2.77.3
CVE-2025-58596 · Published 3 September 2025
Affected versions: ≤ 1.2.75.0
CVE-2024-8628 · Published 23 September 2024
Affected versions: ≤ 1.2.70.3
CVE-2023-23980 · Published 20 January 2023
Affected versions: ≥ 1.2.54.0 and ≤ 1.2.54.0
CVE-2022-36340 · Published 23 September 2022
Affected versions: ≤ 1.2.49.0
No CVE assigned · Published 30 June 2021
Affected versions: ≤ 1.2.35.1
SiteRespond Defence matches your installed Mailoptin version against this catalog when the Defence plugin is connected to your WordPress site.