CVE-2026-25400
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 thememount Apicona apicona allows Object Injection.This issue affects Apicona: from n/a through <= 24.1.0.
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 confidenceThis is a PHP Object Injection vulnerability in the Apicona WordPress theme caused by unsafe deserialization of untrusted data. The theme uses PHP's unserialize() function on user-controlled input without proper validation, allowing attackers to inject malicious PHP objects and potentially achieve remote code execution via magic methods.
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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Locate the Apicona theme installationCheck your WordPress wp-content/themes directory for the apicona folder. If using a child theme, also check its parent theme directory.Affected if The apicona theme folder exists in your themes directory.
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Identify the installed theme versionOpen the style.css file in the apicona theme folder and look for the 'Version:' header in the file comments. Compare this version to any patched version provided by the theme developer.Affected if The installed version is older than the patched version or if no patched version is available.
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Search for unsafe unserialize calls in theme filesUse a grep tool or file search to locate all occurrences of 'unserialize(' within PHP files in the apicona theme folder. Examine the context of each call.Affected if Any PHP file in the theme contains unserialize() calls that process data.
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Verify if unserialize processes user-controlled inputExamine each unserialize() call found and trace back the data source. Check if the data comes from $_POST, $_GET, $_COOKIE, database fields, or API inputs without sanitization.Affected if The unserialize() function processes data that originates from user input or untrusted sources.
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Determine if vulnerable code is accessibleIdentify which PHP files contain the unsafe unserialize calls and check if they are accessed through front-end requests, admin panels, or AJAX endpoints. Test accessing these endpoints.Affected if The vulnerable unserialize code is accessible via web requests without authentication or with standard user-level access.
You are affected if the Apicona theme is installed, contains unsafe unserialize() calls processing user input, and those code paths are accessible in your environment.
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 unsafe unserialize() calls with safe alternatives like json_decode() for data storage, or implement whitelist validation if deserialization is required. Update to the latest patched theme version if available.
- Consultation2.0 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-2026-25400 — 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-2026-25400 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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- Version or environment caveats, and links to real fixes
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