CVE-2026-39640
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 · uneditedCross-Site Request Forgery (CSRF) vulnerability in mndpsingh287 Theme Editor theme-editor allows Code Injection.This issue affects Theme Editor: from n/a through <= 3.2.
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 Cross-Site Request Forgery (CSRF) vulnerability in the mndpsingh287 Theme Editor plugin (versions <= 3.2) allows attackers to trick authenticated administrators into performing unintended actions that result in code injection. The lack of proper CSRF token validation on theme editing functions enables malicious requests to be executed with the privileges of a logged-in administrator.
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
- Required
- Scope
- Changed
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/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 the installed theme versionLocate the theme's style.css file or version declaration in the theme's main PHP file, typically found in /wp-content/themes/mndpsingh287-theme-editor/ directory, and read the Version: headerAffected if The installed version is 3.2 or lower
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Verify the theme editor module is activeCheck if the Theme Editor functionality is accessible in the WordPress admin dashboard under Appearance > Theme Editor, or verify the theme includes editor functionality by inspecting theme files for editor-related PHP classes or functionsAffected if The theme editor is enabled and accessible to administrator users
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Inspect theme editor forms for CSRF protectionExamine the theme editor's PHP files that handle form submissions or state-changing operations (such as saving theme options, editing templates, or modifying configuration). Search for presence of wp_nonce_field, wp_verify_nonce, or similar nonce verification functionsAffected if No CSRF tokens (nonces) are implemented on state-changing form actions within the theme editor
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Check server-side request origin validationReview the theme's PHP handlers that process editor submissions to determine if they validate the Origin or Referer HTTP headers before processing requestsAffected if The theme does not validate the request origin or referer headers server-side
You are affected if the mndpsingh287 Theme Editor theme version is 3.2 or lower AND the theme editor functionality is accessible, with no CSRF token validation present on its state-changing operations.
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 dataImplement anti-CSRF tokens (nonces) for all state-changing operations in the theme editor, verify the Origin/Referer headers, and update the Theme Editor plugin to version 3.3 or later which should contain the patched version.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA3.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,888.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-39640 — 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-2026-39640 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