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Deserialization of Untrusted DataWeakness · CWE-502

CVE-2024-52439

CRITICAL · 9.8 CVSS v3.1 Published 2024-11-20
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
100/100
Remediation priority · Urgent
Remotely reachable No privileges Zero-click

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 · unedited
Deserialization of Untrusted Data vulnerability in Mark O'Donnell Team Rosters team-rosters allows Object Injection.This issue affects Team Rosters: from n/a through <= 4.8.2.

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 confidence

The Team Rosters plugin for WordPress contains a PHP Object Injection vulnerability caused by unsafe deserialization of untrusted data. An attacker can potentially exploit this by serializing malicious PHP objects and passing them through user-controlled input that reaches an unserialize() call, potentially leading to remote code execution via gadget chains.

MitigationUpgrade Team Rosters to a version beyond 4.8.2. If no patched version is available, disable the plugin until a fix is released, or implement input validation and replace unsafe unserialize() calls with json_decode() where possible.

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 checks

Work through these to decide whether this CVE applies to you.

  1. Confirm Team Rosters plugin is installed
    Navigate to WordPress admin > Plugins and check if 'Team Rosters' appears in the installed plugins list, or inspect the /wp-content/plugins/ directory for a folder named 'team-rosters' or similar
    Affected if Team Rosters plugin is present on the WordPress site
  2. Identify the installed plugin version
    In WordPress admin > Plugins, click on the Team Rosters plugin to view its details and note the version number, or open the main plugin PHP file (e.g., team-rosters.php) and look for the 'Version' header in the plugin comment block
    Affected if The version is 4.8.2 or lower (the vulnerability affects versions up to and including 4.8.2)
  3. Locate unsafe unserialize() calls in plugin code
    Search the plugin directory for 'unserialize(' using a tool like grep: grep -r "unialize(" /wp-content/plugins/team-rosters/ or manually inspect PHP files in the plugin folder for unserialize() function calls that process user input
    Affected if Code contains unserialize() calls that handle data from $_GET, $_POST, $_REQUEST, or database fields without prior sanitization
  4. Identify user input reaching the unserialize call
    Trace the data flow from plugin files that handle form submissions, AJAX requests, or URL parameters to locate where unsanitized user data is passed to unserialize(). Look for patterns like unserialize($_POST['param']) or values from the database being deserialized without validation
    Affected if User-controllable data (from request parameters, saved options, or shortcode attributes) flows directly into unserialize() without validation
  5. Verify the attack surface is accessible
    Check if the vulnerable code paths are reachable without authentication (e.g., via frontend shortcodes, AJAX endpoints, or public-facing forms). Inspect plugin files for action/filter hooks and their accessibility status (logged-in vs public)
    Affected if The unserialize() sink can be triggered by unauthenticated users via shortcodes, AJAX calls, or frontend forms

The environment is affected if Team Rosters plugin version 4.8.2 or lower is installed AND the plugin contains unserialize() calls that process user-supplied data without validation.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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 data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Upgrade Team Rosters to a version beyond 4.8.2. If no patched version is available, disable the plugin until a fix is released, or implement input validation and replace unsafe unserialize() calls with json_decode() where possible.

Have this fixed Scoped from the published advisory
  • Consultation2.0 h
  • Implementation8.0 h
  • Testing4.0 h
  • Review / QA3.0 h
17.0 hours of engineering $2,980
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2024-52439 in production — separate from our analysis above.

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What this is

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What belongs here
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  • Version or environment caveats, and links to real fixes
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