High severity · published Jun 15, 2026
CVE-2026-48838
WordPress Post SMTP plugin <= 3.6.2 - Cross Site Scripting (XSS) vulnerability
7.1
CVSS
0.2%
EPSS
No
On KEV
Description
Unauthenticated Cross Site Scripting (XSS) in Post SMTP <= 3.6.2 versions.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
Low
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 15% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PS
Post SMTP · WPExperts
through 3.6.2 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-48838
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-48838
patchstack.com
https://patchstack.com/database/wordpress/plugin/post-smtp/vulnerability/wordpress-post-smtp-plugin-3-6-2-cross-site-scripting-xss-vulnerability?_s_id=cve
More from Post SMTP
9.8
CVE-2023-52233
Missing Authorization vulnerability in Post SMTP Post SMTP Mailer/Email Log.This issue affects Post SMTP Mailer/Email Log: from n/a through 2.8.6
9.8
CVE-2023-6875
The POST SMTP Mailer – Email log, Delivery Failure Notifications and Best Mail SMTP for WordPress plugin for WordPress is vulnerable to unauthorized access of data and…
8.8
CVE-2025-22800
Missing Authorization vulnerability in Saad Iqbal Post SMTP post-smtp allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Post SMTP: from…
8.8
CVE-2023-3179
The POST SMTP Mailer WordPress plugin before 2.5.7 does not have proper CSRF checks in some AJAX actions, which could allow attackers to make logged in users with the…
7.2
CVE-2024-52436
Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in Saad Iqbal Post SMTP post-smtp allows Blind SQL Injection.This issue affects…