CVE-2026-39623
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 Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion') vulnerability in kutethemes Biolife biolife allows PHP Local File Inclusion.This issue affects Biolife: from n/a through <= 3.2.3.
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 · high confidenceA PHP Local File Inclusion vulnerability exists in the kutethemes Biolife theme (version <= 3.2.3) where user-controlled input is improperly used in include/require statements without sufficient validation. An attacker can manipulate the filename parameter to read sensitive local files from the server, potentially exposing configuration files, credentials, or other sensitive data.
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
- High
- Privileges
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:H/PR:L/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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Locate the Biolife theme installationSearch your web server's document root for the 'biolife' or 'kutethemes' theme directory. Common paths include /wp-content/themes/biolife/ (WordPress) or /catalog/view/theme/biolife/ (eCommerce platforms).Affected if The Biolife theme directory exists on the server.
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Identify the installed theme versionOpen the theme's main style.css, version.php, or theme.json file and locate the version declaration. Compare your version number against any officially listed vulnerable versions.Affected if The installed version falls within an affected range or cannot be verified as patched.
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Search for vulnerable include/require patternsGrep the theme directory for dynamic include/require statements that use user-controlled variables, such as: include($_GET['file']); require($theme_dir . $_POST['path']); or similar patterns with $_REQUEST, $_GET, or $_POST in file path arguments.Affected if Dynamic file inclusion calls using unsanitized input parameters are found in the theme code.
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Identify exposed file path parametersReview your application's URL parameters, form inputs, and AJAX endpoints for any parameters that accept file paths (e.g., ?file=, ?path=, ?page=, ?template=). Test if these parameters can be manipulated to reference files outside the intended directory.Affected if Parameters that accept file paths are accessible and accept arbitrary input without validation.
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Verify direct access to PHP files in include directoriesAttempt to access known theme include files directly via HTTP (e.g., /include/header.php?file=../../../../etc/passwd) using a safe test payload to confirm whether the LFI vulnerability is exploitable.Affected if The application returns file contents from outside the intended directory based on the parameter input.
A system is affected if the Biolife theme is installed, contains dynamic include/require statements using unsanitized input, and exposes parameters that accept file paths which can be manipulated to include arbitrary files.
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 dataUpgrade to a patched version of the Biolife theme that properly validates and sanitizes all file inclusion parameters, or implement input validation using whitelist approaches to restrict included files to expected paths only.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA4.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-39623 — 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-2026-39623 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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