CVE-2026-39551
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 · uneditedDeserialization of Untrusted Data vulnerability in Elated-Themes Töbel allows Object Injection. This issue affects Töbel: from n/a through 1.8.1.
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 deserialization of untrusted data vulnerability in the Töbel WordPress theme allows PHP Object Injection, potentially enabling remote code execution if an appropriate gadget chain exists in the application or installed plugins.
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.
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Confirm Töbel theme installationSearch your web application's theme directory for files belonging to the Töbel theme. Check composer.json, theme.yml, or style.css header for the theme name and version.Affected if The Töbel theme is present and you cannot confirm it is patched to a version beyond any affected release.
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Locate unserialize() calls in theme codeSearch the Töbel theme directory recursively for PHP files containing 'unserialize' using grep -r "unserialize" /path/to/toebel/theme/ or similar.Affected if Any unserialize() calls exist within the theme's PHP files.
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Check if unserialize processes external inputReview each unserialize() call found and trace its data source. Look for $_GET, $_POST, $_COOKIE, $_REQUEST, or other user-supplied values passed to unserialize().Affected if Any unserialize() call receives data derived from HTTP request parameters, headers, cookies, or other user-controllable sources.
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Identify input entry pointsExamine the code paths leading to the vulnerable unserialize() calls. Identify the specific URL, parameter, or endpoint that delivers the untrusted serialized data.Affected if The vulnerable unserialize() can be reached via HTTP requests without authentication or with standard user privileges.
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Review available gadget chainsSearch the application codebase (not just the theme) for PHP classes with __wakeup, __destruct, or __toString methods that could be chained with the injection point.Affected if The application contains magic methods in its codebase that could be triggered by the deserialization for malicious impact.
You are affected if the Töbel theme is installed and contains any unserialize() calls that process user-controlled input accessible via HTTP requests.
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 dataReplace unsafe unserialize() calls with json_decode() for handling untrusted data, or implement proper input validation and whitelisting before any deserialization operation.
- Consultation3.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,408.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-39551 — 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-2026-39551 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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