dbcve.org
SQL InjectionWeakness · CWE-89

CVE-2025-53256

HIGH · 7.6 CVSS v3.1 Published 2025-06-27
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
82/100
Remediation priority · High
Remotely reachable Zero-click

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 · unedited
Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in YayCommerce YaySMTP yaysmtp allows SQL Injection.This issue affects YaySMTP: from n/a through <= 2.6.6.

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 confidence

SQL Injection vulnerability in YayCommerce YaySMTP WordPress plugin allows attackers to inject malicious SQL commands via unsanitized user inputs. The flaw exists in database query handling within the plugin's SMTP configuration or email routing functionality, potentially allowing unauthorized data access, modification, or extraction.

MitigationUpgrade YaySMTP to the latest version (beyond 2.6.6) which contains the security patch. If immediate upgrade is not possible, disable the plugin until patched, and audit all user-supplied inputs in the plugin for proper sanitization using prepared statements.

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
High
User interaction
None
Scope
Changed
Confidentiality
High
Integrity
None
Availability
Low

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

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 checks

Work through these to decide whether this CVE applies to you.

  1. Verify YaySMTP plugin is installed
    In WordPress admin, go to Plugins > Installed Plugins and look for YaySMTP or YayCommerce YaySMTP in the list. Alternatively, check the wp-content/plugins directory for a folder named 'yaysmtp' or 'yaycommerce-yaysmtp'.
    Affected if The plugin is present in the WordPress installation
  2. Determine installed YaySMTP version
    In WordPress admin > Plugins > Installed Plugins, find YaySMTP and view the version number displayed below the plugin name. Alternatively, check the main plugin file (e.g., yaysmtp/yaysmtp.php) for the 'Version' header in the plugin comment block.
    Affected if The version is 2.6.6 or lower (versions up to and including 2.6.6 are affected)
  3. Confirm SMTP configuration is active
    In WordPress admin, navigate to YaySMTP > Settings (or similar SMTP settings page) and verify that an SMTP mailer is configured and enabled. Check if any email routing or sender configuration fields contain user-supplied values.
    Affected if SMTP configuration is saved and the plugin is actively handling outgoing email, as the SQL injection occurs in the SMTP configuration or email routing code path

A user is affected if YaySMTP plugin is installed with version 2.6.6 or lower and the plugin's SMTP configuration or email routing features are enabled and in use.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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.

From vendor data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Upgrade YaySMTP to the latest version (beyond 2.6.6) which contains the security patch. If immediate upgrade is not possible, disable the plugin until patched, and audit all user-supplied inputs in the plugin for proper sanitization using prepared statements.

Have this fixed Scoped from the published advisory
  • Consultation2.0 h
  • Implementation4.0 h
  • Testing3.0 h
  • Review / QA2.0 h
11.0 hours of engineering $1,930
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2025-53256 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • 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