CVE-2026-25029
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 park_of_ideas KIDZ kidz allows Object Injection.This issue affects KIDZ: from n/a through <= 5.24.
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 KIDZ plugin from park_of_ideas. The issue stems from insecure deserialization of untrusted data, allowing attackers to inject malicious PHP objects into the application's scope. With a CVSS score of 9.8 (Critical), successful exploitation can potentially lead to remote code execution, file system access, or other attacks via magic method chaining.
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 checksWork through these to decide whether this CVE applies to you.
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Check KIDZ plugin versionIn WordPress admin, go to Plugins > Installed Plugins > KIDZ and view the Version number. Alternatively, check the plugin header in wp-content/plugins/kidz/main-plugin-file.php for the 'Version:' comment.Affected if Version number is 5.24 or lower
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Confirm plugin is activeIn WordPress admin, go to Plugins > Installed Plugins and verify that KIDZ is currently activated.Affected if Plugin is active and vulnerable version is installed
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Identify unserialize() calls in plugin codeSearch the plugin files (in wp-content/plugins/kidz/) for calls to unserialize() function. Use grep or similar: grep -r "unserialize" wp-content/plugins/kidz/Affected if Code contains unserialize() calls that process user-supplied input without validation
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Check for gadget classes in plugin or dependenciesSearch for class definitions in the plugin directory that might be exploitable as PHP Object Injection gadgets. Look for __destruct, __wakeup, or __toString magic methods: grep -rE "function __(destruct|wakeup|toString)" wp-content/plugins/kidz/Affected if Classes with magic methods exist and unserialize processes external input
User is affected if KIDZ plugin version is 5.24 or lower, the plugin is active, and the plugin code contains unserialize() calls processing untrusted data with exploitable gadget classes present.
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 dataImmediately upgrade KIDZ to the latest patched version once available. In the interim, disable the plugin if possible and audit the codebase for unsafe deserialization calls (unserialize()) with untrusted input, replacing with safer alternatives like JSON decoding.
- Consultation3.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA3.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,088.
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Free · runs locallyCheck whether your project pulls in CVE-2026-25029 — 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-2026-25029 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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