CVE-2025-11833
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedThe Post SMTP – Complete SMTP Solution with Logs, Alerts, Backup SMTP & Mobile App plugin for WordPress is vulnerable to unauthorized access of data due to a missing capability check on the __construct function in all versions up to, and including, 3.6.0. This makes it possible for unauthenticated attackers to read arbitrary logged emails sent through the Post SMTP plugin, including password reset emails containing password reset links, which can lead to account takeover.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceThe Post SMTP WordPress plugin has a broken access control vulnerability in its __construct function that lacks a capability check, allowing unauthenticated attackers to read arbitrary logged emails. This exposes sensitive data including password reset emails with functional reset links, enabling complete account takeover of affected users.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify Post SMTP plugin installation and versionIn WordPress admin, go to Plugins > Installed Plugins and locate Post SMTP. Check the version number displayed under the plugin name. Alternatively, examine the plugin header in /wp-content/plugins/post-smtp/post-smtp.php or check the version in the plugin's main PHP file.Affected if The plugin is installed with a version number lower than 3.6.1
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Determine if email logging is enabledNavigate to Post SMTP > Email Log in the WordPress admin dashboard. Check if email logging is turned on or if any logged emails are present in the database.Affected if Email logging is enabled and logged emails exist in the system
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Verify plugin file access controlExamine the main plugin file (post-smtp.php or class-post-smtp.php) and locate the __construct function. Check if it contains a capability check (such as current_user_can or similar authorization) before executing sensitive operations.Affected if The __construct function lacks a capability check, allowing unauthenticated access to logged email data
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Check for exposed email log endpointsInspect the plugin's AJAX handlers and public-facing PHP functions. Look for endpoints that handle email log retrieval without requiring authentication.Affected if Unauthenticated endpoints exist that can be queried to retrieve logged email contents
You are affected if Post SMTP plugin is installed with a version before 3.6.1 and email logging is enabled, as unauthenticated attackers can read all logged emails including password reset links.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
dbcve · scopedUpdate the Post SMTP plugin to version 3.6.1 or later to receive the patched version with proper capability/authorization checks on the __construct function.
Latest version after 3.6.0 (check WordPress plugin repository for 3.6.1 or later)
- 1. Update the Post SMTP plugin to the latest available version through the WordPress admin dashboard under Plugins > Installed Plugins > Post SMTP > Update Now
- 2. After updating, verify that the plugin is functioning correctly by sending a test email through the plugin settings
- 3. Review any logged emails that may have been exposed and consider notifying affected users if sensitive information was logged
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,088.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-11833 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2025-11833 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
- No spam, self-promotion, credentials, or personal data