CVE-2026-56055
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 · uneditedSubscriber PHP Object Injection in RealHomes <= 4.5.3 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 · moderate confidenceThis is a PHP Object Injection vulnerability in the RealHomes WordPress theme affecting versions 4.5.3 and below. The flaw allows authenticated users with subscriber-level privileges (the lowest WordPress role) to inject arbitrary PHP objects by exploiting unsafe unserialize() on user-supplied data, potentially leading to remote code execution depending on available POP (Property-Oriented Programming) chains.
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
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:L/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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Identify RealHomes theme installation and versionIn WordPress admin, go to Appearance > Themes to confirm RealHomes is active. Check the theme version by viewing the style.css file in the theme directory (typically /wp-content/themes/realhomes/) and look for the 'Version:' header in the file comments.Affected if The theme is active and the version listed is 4.5.3 or lower.
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Confirm WordPress user roles with subscriber-level accessNavigate to Users > All Users in the WordPress admin dashboard. Review the list to identify any users assigned the Subscriber role, or check Users > Add New if user registration is enabled (Settings > General > Membership: "Anyone can register" with default role set to Subscriber).Affected if Any subscriber-level user accounts exist, or open registration allows new subscriber registrations.
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Locate unsafe unserialize() calls in theme filesUse a file search or grep utility to scan PHP files in the RealHomes theme directory for patterns like 'unserialize($_POST', 'unserialize($_GET', 'unserialize($_REQUEST', or other unserialize() calls that process input without validation. Check common AJAX handlers and form processing files.Affected if Any unserialize() call is found that processes user-supplied input without prior sanitization.
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Audit for POP chain gadgets in active pluginsReview all active plugins on the site, particularly popular ones like WooCommerce, bbPress, or plugins that may expose object methods usable in a POP chain for RCE. Check plugin versions against known vulnerable POP chain scenarios.Affected if Plugins with known POP chain capabilities are active and vulnerable to similar injection patterns.
A user is affected if the RealHomes theme version is 4.5.3 or below AND subscriber-level user accounts can access the site, enabling exploitation of the unsafe unserialize() call.
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 dataUpdate RealHomes theme to version 4.5.4 or later. If no patch is available, disable subscriber registration and review the codebase for unsafe unserialize() calls on any user-controlled input, replacing with json_decode() or safe parsing methods.
- Consultation2.0 h
- Implementation2.0 h
- Testing2.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-56055 — 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-2026-56055 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
- No spam, self-promotion, credentials, or personal data