MailOptin – Popup, Optin Forms & Email Newsletters for Mailchimp, HubSpot, AWeber Etc. <= 1.2.77.3 - Unauthenticated Privilege Escalation

2026-07-09 00:00

qdtad

Strategic Overview

Status

Patched in 1.2.78.0

Affected PluginMailOptin – Popup, Optin Forms & Email Newsletters for Mailchimp, HubSpot, AWeber Etc.

Affected Version<= 1.2.77.3

CVSS9.8Critical

CVECVE-2026-57813

View all MailOptin – Popup, Optin Forms & Email Newsletters for Mailchimp, HubSpot, AWeber Etc. vulnerabilities

Vulnerability Overview

The MailOptin – Popup, Optin Forms & Email Newsletters for Mailchimp, HubSpot, AWeber Etc. plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 1.2.77.3. This makes it possible for unauthenticated attackers to elevate their privileges.

Technical Analysis

REMEDIATION: Update to version 1.2.78.0, or a newer patched version --- IDENTIFIER: CWE-266 (Incorrect Privilege Assignment) A product incorrectly assigns a privilege to a particular actor, creating an unintended sphere of control for that actor.

External References

https://www.cve.org/CVERecord?id=CVE-2026-57813 https://www.wordfence.com/threat-intel/vulnerabilities/id/72633a5c-67e7-444f-9a32-ef3266468cee

CVSS Vector

9.8

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

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