CVE-2026-42740
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 · uneditedImproper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in tainacan Tainacan tainacan allows Blind SQL Injection.This issue affects Tainacan: from n/a through <= 1.0.3.
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 confidenceA blind SQL injection vulnerability exists in the Tainacan WordPress plugin (versions <= 1.0.3) due to improper neutralization of special elements in SQL commands. An attacker can inject malicious SQL queries through unsanitized input parameters, potentially allowing unauthorized data extraction or database manipulation without seeing direct output.
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 checksWork through these to decide whether this CVE applies to you.
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Identify if Tainacan plugin is installedCheck the WordPress plugins directory for the Tainacan plugin folder, or look for Tainacan in the WordPress admin plugin listAffected if Tainacan plugin is present in the WordPress installation
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Determine the installed Tainacan versionOpen the main Tainacan plugin file (typically in wp-content/plugins/tainacan/) and locate the version declaration in the plugin header comment, or check the plugin metadata via WordPress adminAffected if The installed version is 1.0.3 or any earlier version (the vulnerability affects versions up to 1.0.3)
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Verify the plugin is active and web-accessibleConfirm the Tainacan plugin is activated in WordPress and that the site is publicly accessible, allowing unauthenticated HTTP requests to reach the plugin endpointsAffected if The plugin is activated and accessible to unauthenticated (logged-out) users
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Confirm the plugin handles user input in database queriesInspect the plugin code for SQL query execution that accepts parameters from HTTP request variables (GET/POST parameters) without using prepare() statements or parameterized queriesAffected if The plugin processes unsanitized input from HTTP requests directly into SQL queries, making the blind SQL injection exploitable
If Tainacan plugin version 1.0.3 or earlier is installed, active, and accessible to unauthenticated users who can trigger unsanitized SQL queries through input parameters, the environment is affected by this blind SQL injection vulnerability.
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.
From vendor dataUpdate to a patched version of Tainacan when available, or implement parameterized queries/prepared statements for all database queries handling user input to remediate the SQL injection vulnerability.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA4.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $6,176.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-42740 — 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-2026-42740 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
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