CVE-2025-54012
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 info@welcart Welcart e-Commerce usc-e-shop allows Object Injection.This issue affects Welcart e-Commerce: from n/a through <= 2.11.16.
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 deserialization vulnerability (object injection) in the Welcart e-Commerce WordPress plugin where untrusted data is passed to PHP's unserialize() function, potentially allowing remote code execution if suitable gadget chains exist in the application or loaded classes.
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
- High
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:H/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 if Welcart e-Commerce plugin is installedCheck the WordPress plugins directory (wp-content/plugins/) for a folder named usc-e-shop, or view the installed plugins list in the WordPress admin dashboard under Plugins > Installed Plugins.Affected if Welcart e-Commerce plugin is present and active in the WordPress installation
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Determine the installed plugin versionRead the Version field from the plugin header in the main plugin file (usc-e-shop.php typically located in the usc-e-shop folder), or view the version listed in the WordPress admin plugins page.Affected if The installed version falls within the affected version range for this CVE (compare your version to the patched version to determine if vulnerable)
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Locate insecure unserialize() calls in plugin codeSearch the plugin source code for patterns where unserialize() receives user-supplied input. Use grep or a code search tool to find calls like unserialize($_POST, unserialize($_GET, unserialize($_REQUEST, or unserialize($_COOKIE within the usc-e-shop directory.Affected if Code is found that passes untrusted user input directly to PHP's unserialize() function without prior sanitization
If Welcart e-Commerce is installed, the version is within the vulnerable range, and the plugin code contains unserialize() calls handling user-supplied data, the environment is affected by CVE-2025-54012.
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 Welcart e-Commerce to the latest patched version. If no patch is available, audit the codebase for insecure use of unserialize() on user-supplied data and replace with json_decode() or safe validation methods.
- Consultation4.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-54012 — 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-2025-54012 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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