CVE-2026-27083
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 ThemeREX Work & Travel Company work-travel-company allows Object Injection.This issue affects Work & Travel Company: from n/a through <= 1.2.
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 confidencePHP Object Injection vulnerability via deserialization of untrusted data in the ThemeREX Work & Travel Company plugin/theme. The vulnerability allows remote attackers to inject malicious PHP objects, potentially leading to remote code execution if exploitable magic methods or POP chains exist in the application or loaded libraries.
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
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/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 ThemeREX Work & Travel Company installationCheck your web server's plugin or theme directories for the ThemeREX Work & Travel Company plugin/theme folder. Look for a version file, header comment in main PHP files, or a changelog file that lists the installed version number.Affected if The plugin or theme is installed and the version cannot be verified as patched or is older than any available patched version.
-
Locate unserialize() calls in the plugin/themeSearch all PHP files within the ThemeREX Work & Travel Company directory for the pattern 'unserialize(' using grep, a file search tool, or IDE. Note the file paths and line numbers where unserialize() appears.Affected if Any unserialize() call exists in the plugin/theme code.
-
Check if unserialize handles user inputExamine each unserialize() call found and trace back its data source. Look for direct or indirect use of $_GET, $_POST, $_COOKIE, $_REQUEST, or other user-supplied input as the argument to unserialize().Affected if The unserialize() function receives data that originates from user input without prior sanitization or validation.
-
Verify input validation existsIf user input reaches unserialize(), check whether the code implements class whitelisting using the 'allowed_classes' parameter of unserialize() or performs some form of input validation before deserialization.Affected if No class whitelisting is implemented and no input validation occurs before unserialize() processes the data.
Your environment is affected if the ThemeREX Work & Travel Company plugin/theme is installed and contains unserialize() calls that process user-controlled data without class whitelisting or validation.
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 all unserialize() calls that handle user input with safer alternatives like json_decode(). If unserialization is required, implement whitelisting of allowed classes. Update to the latest patched version if available.
- Consultation3.0 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 $5,568.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-27083 — 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-2026-27083 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