The Post SMTP plugin for WordPress is vulnerable to unauthorized access due to a missing capability check on the regenerate_qrcode() function in versions up to, and including, 2.9.11. This makes it possible for authenticated attackers, with subscriber-level access and above, to generate QR codes.
CVE-2025-22800 is a medium severity with CVSS 4.3 Vulnerability issue affecting the Plugin Post SMTP – Complete Email Deliverability and SMTP Solution with Email Logs, Alerts, Backup SMTP & Mobile App. It affects Versions up to 2.9.11 and is fixed in 2.9.12.
CVE-2025-22800 is tracked for the Plugin Post SMTP – Complete Email Deliverability and SMTP Solution with Email Logs, Alerts, Backup SMTP & Mobile App as medium severity with CVSS 4.3. The affected range is Versions up to 2.9.11. Update Post SMTP – Complete Email Deliverability and SMTP Solution with Email Logs, Alerts, Backup SMTP & Mobile App to 2.9.12 or newer where that version is compatible with the site.
| Software Type | Plugin |
|---|---|
| Software Slug |
post-smtp
View on wordpress.org
|
| CVE | CVE-2025-22800 |
| Patched Versions |
2.9.12
|
| Affected Versions |
Versions up to 2.9.11
|
These internal links group the same WordPress plugin by CVE, issue type, severity, and patch status so operators and search engines can connect the full vulnerability cluster.
Post SMTP – Complete SMTP Solution with Logs, Alerts, Backup SMTP & Mobile App <= 3.6.0 - Missing Authorization to Account Takeover via Unauthenticated Email Log Disclosure
POST SMTP Mailer – Email log, Delivery Failure Notifications and Best Mail SMTP for WordPress <= 2.8.7 - Authorization Bypass via type connect-app API
Post SMTP <= 3.2.0 - Missing Authorization to Authenticated (Subscriber+) Account Takeover via Email Log Exposure
Post SMTP <= 3.8.0 - Unauthenticated Stored Cross-Site Scripting via 'event_type'
Post SMTP <= 3.0.2 - Unauthenticated Stored Cross-Site Scripting
POST SMTP Mailer – Email log, Delivery Failure Notifications and Best Mail SMTP for WordPress <= 2.9.3 - Authenticated (Administrator+) SQL Injection
POST SMTP Mailer – Email log, Delivery Failure Notifications and Best Mail SMTP for WordPress <= 2.8.7 - Unauthenticated Stored Cross-Site Scripting via device
POST SMTP Mailer – Email log, Delivery Failure Notifications and Best Mail SMTP for WordPress <= 2.8.6 - Authenticated (Administrator+) SQL Injection
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