Deserialization of Untrusted DataWeakness · CWE-502

CVE-2025-60229

CRITICAL · 9.8 CVSS v3.1 Published 2026-06-17
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
100/100
Remediation priority · Urgent
Remotely reachable No privileges Zero-click

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 · unedited
Deserialization of Untrusted Data vulnerability in Themeton Lagom allows Object Injection. This issue affects Lagom: from n/a through 2.0.

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 confidence

Deserialization of Untrusted Data vulnerability in Themeton Lagom theme allows PHP Object Injection via insecure use of unserialize() on user-controlled input. This can lead to code execution or other malicious object manipulation depending on available POP chains.

MitigationReplace insecure unserialize() calls with safe alternatives like json_decode(). If patching is not possible from the theme vendor, consider alternative theming solutions or implement input validation/filtering at the application layer.

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 checks

Work through these to decide whether this CVE applies to you.

  1. Confirm Themeton Lagom theme is installed
    Check the wp-content/themes/ directory for the 'lagom' or 'themeton-lagom' folder, or list installed WordPress themes via 'wp theme list' command
    Affected if The Lagom theme by Themeton is present in the WordPress themes directory
  2. Locate insecure unserialize() calls in theme PHP files
    Search theme PHP files for pattern: grep -r 'unserialize' /path/to/wp-content/themes/lagom/ or use IDE search across the theme directory
    Affected if PHP files contain unserialize() function calls, particularly on data derived from external sources
  3. Verify if unserialize() receives user-controlled input
    Examine the context of found unserialize() calls - check if the input comes from $_POST, $_GET, $_COOKIE, $_REQUEST, or database values that can be influenced by users
    Affected if The unserialize() call processes data that originates from HTTP request parameters, cookies, or other user-controllable sources without prior sanitization
  4. Check if vulnerable code is in accessible code path
    Review the functions/classes containing unserialize() to determine if they are called during normal page loads, AJAX requests, or admin actions - examine add_action/add_filter hooks in the theme
    Affected if The vulnerable unserialize() is reachable without authentication or is reachable through standard WordPress hooks that handle incoming requests
  5. Identify potential POP chain gadgets in the theme or plugins
    Search for PHP classes with magic methods (__destruct, __wakeup, __toString, __invoke) in the theme and active plugins that could form a POP chain when combined with the unserialize() vulnerability
    Affected if Classes with dangerous magic methods exist in the theme or installed plugins that could be chained for code execution

A user is affected if the Themeton Lagom theme is installed AND contains unserialize() calls that process user-controlled input without prior validation, especially if exploitable POP chain gadgets are present in the theme or plugins.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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 data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Replace insecure unserialize() calls with safe alternatives like json_decode(). If patching is not possible from the theme vendor, consider alternative theming solutions or implement input validation/filtering at the application layer.

Have this fixed Scoped from the published advisory
  • Consultation2.0 h
  • Implementation4.0 h
  • Testing3.0 h
  • Review / QA2.0 h
11.0 hours of engineering $1,930
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Scan for this in your stack

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2025-60229 in production — separate from our analysis above.

No notes yet

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What this is

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.

What belongs here
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  • Version or environment caveats, and links to real fixes
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