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Deserialization of Untrusted DataWeakness · CWE-502

CVE-2024-24842

HIGH · 8.7 CVSS v3.1 Published 2024-03-27
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
96/100
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 Echo Plugins Knowledge Base for Documentation, FAQs with AI Assistance.This issue affects Knowledge Base for Documentation, FAQs with AI Assistance: from n/a through 11.30.2.

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

A deserialization of untrusted data vulnerability exists in the Echo Plugins Knowledge Base plugin (versions up to 11.30.2). This type of vulnerability occurs when the application deserializes data from untrusted sources without proper validation, potentially allowing attackers to manipulate serialized objects to achieve code execution or other malicious outcomes.

MitigationUpdate to the latest version of the plugin if a patch is available. If no update exists, implement strict input validation and avoid deserializing untrusted data. Consider disabling the plugin until a fix is released.

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
High
Privileges
None
User interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
None

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N

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. Verify the installed version of the Knowledge Base plugin
    Navigate to WordPress admin > Plugins > Installed Plugins and locate the Knowledge Base plugin by Echo Plugins. Note the version number displayed, or open the main plugin PHP file (typically /wp-content/plugins/echo-knowledge-base/includes/ or similar) and look for the 'Version' header in the plugin comment block.
    Affected if The installed version is 11.30.2 or any earlier version (e.g., 11.30.1, 11.20.0, etc.)
  2. Identify if the plugin processes serialized data from external sources
    Search the plugin directory for PHP functions that handle deserialization: look for unserialize(), eval(), or base64_decode() calls that process input from $_GET, $_POST, $_REQUEST, or $_COOKIE superglobals. Use a code search tool or grep across the plugin files.
    Affected if The plugin contains code that deserializes data from untrusted HTTP request parameters without prior validation or sanitization
  3. Check for AJAX or admin AJAX actions that accept user input
    Examine the plugin for registered WordPress AJAX hooks (wp_ajax_* and wp_ajax_nopriv_*) and review whether these handlers accept and process serialized objects or base64-encoded data from requests. Look in the plugin's main PHP file or any includes/admin-ajax.php file.
    Affected if Publicly accessible AJAX endpoints (wp_ajax_nopriv_*) process untrusted serialized data from unauthenticated users

You are affected if the Knowledge Base plugin version is 11.30.2 or lower AND the plugin deserializes data from untrusted external sources (HTTP inputs) 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.

dbcve · scoped
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Update to the latest version of the plugin if a patch is available. If no update exists, implement strict input validation and avoid deserializing untrusted data. Consider disabling the plugin until a fix is released.

Recommended fix Moderate confidence

Update to the latest version of the plugin beyond 11.30.2 (check WordPress plugin repository for the most recent patched release)

  1. 1. Log in to the WordPress admin dashboard where the Knowledge Base for Documentation, FAQs with AI Assistance plugin is installed.
  2. 2. Navigate to Plugins > Installed Plugins.
  3. 3. Locate the 'Knowledge Base for Documentation, FAQs with AI Assistance' plugin from Echo Plugins.
  4. 4. If an update is available, click 'Update Now' to install the latest patched version.
  5. 5. After updating, verify the plugin version in the plugins list to confirm the update completed successfully.
  6. 6. Test critical functionality of the knowledge base to ensure the update did not break existing features.

Generated from the published advisory — verify against the referenced sources before acting.

Have this fixed Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing4.0 h
  • Review / QA3.0 h
19.0 hours of engineering $3,380
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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-2024-24842 in production — separate from our analysis above.

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What this is

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What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
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