CVE-2026-39446
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 · uneditedUnauthenticated PHP Object Injection in Kapee < 1.7.0 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 · high confidenceUnauthenticated PHP Object Injection vulnerability in Kapee theme versions before 1.7.0 allows remote attackers to inject malicious PHP objects via unsanitized input passed to PHP's unserialize() function, potentially leading to remote code execution through magic methods.
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
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:H/PR:N/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.
-
Identify if Kapee theme is installedLocate the Kapee theme directory - typically found in wp-content/themes/kapee/ on WordPress installations. Check for the presence of the kapee theme folder and its core files (e.g., style.css, functions.php).Affected if The Kapee theme folder exists in the themes directory.
-
Determine installed Kapee theme versionOpen the theme's style.css file in wp-content/themes/kapee/ and locate the 'Version:' header in the file comment block. Alternatively, check version.php or functions.php for a version constant definition.Affected if The version string returned is lower than 1.7.0 (e.g., 1.6.9, 1.6.0, 1.5.2, etc.).
-
Verify the vulnerable component is accessibleInspect the Kapee theme's AJAX handlers and form processing files for calls to unserialize() on user-supplied data. Look in files like ajax.php, functions.php, or any file handling $_GET, $_POST, or $_REQUEST input passed to unserialize(). The flaw exists where untrusted input reaches deserialization logic without validation.Affected if The theme contains code that deserializes untrusted input without sanitization, and this code is reachable via publicly accessible endpoints.
-
Check if AJAX actions are exposedReview the wp_ajax_ and wp_ajax_nopriv_ hooks in the theme to determine which endpoints are available to unauthenticated users. Test by making a request to /wp-admin/admin-ajax.php with action parameter matching the theme's hooks.Affected if AJAX endpoints that handle deserialization are accessible to unauthenticated users (not logged in).
-
Look for indicators of exploitationReview web server access logs for unusual PHP object injection patterns, such as requests to admin-ajax.php with serialized payloads in action parameters or other input fields. Check for unfamiliar PHP files in the theme directory or unexpected files in wp-content/uploads/ that may indicate successful exploitation.Affected if Suspicious serialized data in request parameters or unauthorized PHP files appear in the theme or upload directories.
The environment is affected if the Kapee theme is installed with a version lower than 1.7.0 AND the theme exposes deserialization logic to unauthenticated users through AJAX or other public endpoints.
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.
dbcve · scopedUpgrade Kapee to version 1.7.0 or later. If immediate update is not possible, implement web application firewall rules to block requests targeting the vulnerable unserialize() entry point.
1.7.0
- Upgrade Kapee theme to version 1.7.0 or later to resolve the unauthenticated PHP Object Injection vulnerability
- After upgrading, verify the installation is working correctly and review site functionality
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation1.0 h
- Implementation1.0 h
- Testing2.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $1,376.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-39446 — 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-2026-39446 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
Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.
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.
- 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