dbcve.org
SQL InjectionWeakness · CWE-89

CVE-2026-40771

CRITICAL · 9.3 CVSS v3.1 Published 2026-06-15
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
100/100
Remediation priority · Urgent
Remotely reachable No privileges 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
Unauthenticated SQL Injection in Contest Gallery <= 28.1.6 versions.

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 · moderate confidence

An unauthenticated SQL injection vulnerability exists in Contest Gallery plugin versions 28.1.6 and below. Attackers can exploit this by sending malicious SQL queries through the vulnerable endpoint without requiring any authentication credentials, potentially allowing full database compromise.

MitigationUpdate Contest Gallery to a version newer than 28.1.6 immediately. If no patched version is available, disable the plugin until a fix is released.

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
Changed
Confidentiality
High
Integrity
None
Availability
Low

CVSS:3.1/AV:N/AC:L/PR:N/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 Contest Gallery plugin is installed
    Log into the WordPress admin dashboard and navigate to Plugins > Installed Plugins. Look for 'Contest Gallery' in the list of active plugins.
    Affected if The Contest Gallery plugin appears in the installed plugins list and is activated.
  2. Check installed version number
    In the WordPress admin, go to Plugins > Installed Plugins. Find Contest Gallery and note the version number displayed under the plugin name.
    Affected if The version listed is 28.1.6 or lower.
  3. Confirm plugin is handling requests
    Identify the contest gallery endpoints on the site (typically /?rg= or similar query parameters used by the plugin). Use a browser or curl to confirm the plugin responds to requests without authentication.
    Affected if The plugin responds to requests without requiring login credentials.
  4. Check for exposed database error messages
    Send a test request with SQL injection characters (such as a single quote ') to the contest gallery endpoints. Inspect the response for SQL error messages or unexpected database behavior.
    Affected if SQL errors or database-related messages appear in the response.

If Contest Gallery plugin is installed, active, version 28.1.6 or below, and its endpoints are publicly accessible without authentication, the environment is affected by this unauthenticated SQL injection vulnerability.

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

Update Contest Gallery to a version newer than 28.1.6 immediately. If no patched version is available, disable the plugin until a fix is released.

Have this fixed Scoped from the published advisory
  • Consultation3.0 h
  • Implementation6.0 h
  • Testing4.0 h
  • Review / QA2.0 h
15.0 hours of engineering $2,640
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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-2026-40771 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