Critical severity · published Jul 13, 2026
CVE-2026-57813
WordPress MailOptin plugin <= 1.2.77.3 - Privilege Escalation vulnerability
9.8
CVSS
0.5%
EPSS
No
On KEV
Description
Incorrect Privilege Assignment vulnerability in properfraction MailOptin mailoptin allows Privilege Escalation.This issue affects MailOptin: from n/a through <= 1.2.77.3.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 41% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MA
MailOptin · properfraction
through 1.2.77.3 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-57813
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-57813
patchstack.com
https://patchstack.com/database/Wordpress/Plugin/mailoptin/vulnerability/wordpress-mailoptin-plugin-1-2-77-3-privilege-escalation-vulnerability?_s_id=cve
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