Deserialization of Untrusted DataWeakness · CWE-502

CVE-2026-22500

CRITICAL · 9.8 CVSS v3.1 Published 2026-03-25
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 axiomthemes m2 | Construction and Tools Store m2-ce allows Object Injection.This issue affects m2 | Construction and Tools Store: from n/a through <= 1.1.2.

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 confidence

A PHP Object Injection vulnerability exists in the axiomthemes m2 | Construction and Tools Store Magento theme due to unsafe deserialization of untrusted data. This critical flaw (CVSS 9.8) allows attackers to inject malicious PHP objects, potentially leading to remote code execution by leveraging magic methods like __wakeup or __destruct.

MitigationUpgrade to version 1.1.3 or later if available; otherwise, disable the affected theme component and implement input validation on all deserialized data streams.

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 the axiomthemes m2 theme is installed
    Check your Magento 2 installation for the presence of the axiomthemes m2 | Construction and Tools Store theme. Look in app/design/frontend/ or vendor/ directory for 'axiomthemes' or 'm2' theme folders.
    Affected if The theme folder named 'axiomthemes', 'm2', or 'Construction' is present in the frontend design directory.
  2. Determine the installed theme version
    Check the theme's composer.json, theme.xml, or registration.php file typically found in app/design/frontend/axiomthemes/m2/ or vendor/axiomthemes/m2/ for the version number.
    Affected if The reported version is 1.1.2 or lower.
  3. Identify unsafe deserialization calls in theme code
    Search all PHP files within the theme directory for the use of unserialize() function, particularly any that process user-supplied input, request parameters, or data from external sources.
    Affected if The theme contains unserialize() calls that handle untrusted input.
  4. Verify the theme is active in Magento
    Run the Magento CLI command: php bin/mongo theme:list or check the Magento admin panel under Content > Design > Themes to confirm the theme is configured as active.
    Affected if The axiomthemes m2 theme is set as the active design theme for the store.
  5. Check for web input entry points
    Review any theme-related controllers, observers, or template files that accept data via GET/POST parameters, cookies, or HTTP headers and pass this data to unserialize().
    Affected if User-controllable input can reach unsafe unserialize() calls in the theme.

Your environment is affected if the axiomthemes m2 Construction and Tools Store theme (version 1.1.2 or lower) is installed and active, and contains unsafe unserialize() calls that process external input.

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

Upgrade to version 1.1.3 or later if available; otherwise, disable the affected theme component and implement input validation on all deserialized data streams.

Have this fixed Scoped from the published advisory
  • Consultation3.0 h
  • Implementation6.0 h
  • Testing4.0 h
  • Review / QA3.0 h
16.0 hours of engineering $2,820
Get help mitigating

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $4,512.

Scan for this in your stack

Free · runs locally
dbcve dependency scanner

Check whether your project pulls in CVE-2026-22500 — 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 sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2026-22500 in production — separate from our analysis above.

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.

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
  • 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