CVE-2025-48289
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 AncoraThemes Kids Planet kidsplanet allows Object Injection.This issue affects Kids Planet: from n/a through <= 2.2.14.
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 confidenceA deserialization of untrusted data vulnerability in the Kids Planet WordPress theme allows PHP object injection. This occurs when the application deserializes data from untrusted sources without proper validation, potentially enabling remote code execution if suitable 'gadget chains' (available PHP classes with magic methods) exist in the application or loaded plugins.
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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Confirm Kids Planet theme is installedNavigate to Appearance > Themes in WordPress admin dashboard and verify if the Kids Planet theme is present in the theme listingAffected if The Kids Planet theme is installed or active on the WordPress site
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Identify the installed theme versionCheck the style.css file within the Kids Planet theme directory (wp-content/themes/kids-planet/) for the 'Version:' header in the file comments, or inspect theme metadata via WordPress admin under Appearance > Themes > Theme DetailsAffected if The installed version falls within any vulnerable version range that has not been patched
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Locate insecure deserialization calls in theme codeSearch the Kids Planet theme directory for the use of unserialize() function by running: grep -r "unserialize" wp-content/themes/kids-planet/ or using a file search in a code editorAffected if The theme contains any unserialize() calls operating on data that could be influenced by users
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Determine if unserialize() receives user-controlled inputExamine each unserialize() call found and trace back the data source to determine if it originates from HTTP request parameters, POST data, cookies, or other user-supplied inputAffected if Untrusted/user-controlled data reaches the unserialize() function without validation or sanitization
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Check for active plugin gadget chainsReview installed WordPress plugins for classes with magic methods (__wakeup, __destruct, __toString, etc.) that could form gadget chains, as these would increase exploitability if the object injection is reachableAffected if Plugins with exploitable gadget chains are active alongside the vulnerable theme code path
The environment is affected if the Kids Planet theme is installed and contains insecure unserialize() calls that process untrusted user input without validation.
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 Kids Planet theme to the latest patched version immediately. If no patch is available, disable the theme and audit code for insecure use of unserialize() on user-controlled data, implementing whitelisting or avoiding deserialization entirely.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA4.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2025-48289 — 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-2025-48289 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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