CVE-2025-2939 – The Ninja Tables WordPress plugin is vulnerable... (How to Fix)

Q: What is the severity of CVE-2025-2939?

CVE-2025-2939 has a CVSS score of 5.6 (MEDIUM). The Ninja Tables WordPress plugin is vulnerable to PHP object injection via deserialization of untrusted input in the args[callback] parameter. This allows unauthenticated attackers to execute arbitrary PHP functions, though without user-supplied parameters. All WordPress sites using Ninja Tables versions up to 5.0.18 are affected.

📋 TL;DR

The Ninja Tables WordPress plugin is vulnerable to PHP object injection via deserialization of untrusted input in the args[callback] parameter. This allows unauthenticated attackers to execute arbitrary PHP functions, though without user-supplied parameters. All WordPress sites using Ninja Tables versions up to 5.0.18 are affected.

💻 Affected Systems

Products:

Ninja Tables – Easy Data Table Builder WordPress plugin

Versions: All versions up to and including 5.0.18

Operating Systems: Any OS running WordPress

Default Config Vulnerable: ⚠️ Yes

Notes: All WordPress installations with vulnerable plugin versions are affected regardless of configuration.

📦 What is this software?

Ninja Tables by Wpmanageninja

View all CVEs affecting Ninja Tables →

⚠️ Risk & Real-World Impact

🔴

Worst Case

Attackers could execute arbitrary PHP functions leading to remote code execution, data manipulation, or site takeover if vulnerable POP chains exist.

🟠

Likely Case

Limited function execution without parameters, potentially causing denial of service, information disclosure, or limited code execution.

🟢

If Mitigated

With proper input validation and security controls, exploitation would be prevented or limited to minimal impact.

🌐 Internet-Facing: HIGH

🏢 Internal Only: MEDIUM

🎯 Exploit Status

Public PoC: ✅ No

Weaponized: LIKELY

Unauthenticated Exploit: ⚠️ Yes

Complexity: LOW

Exploitation requires crafting malicious serialized objects but is straightforward for attackers with knowledge of available POP chains.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: 5.0.19

Vendor Advisory: https://plugins.trac.wordpress.org/browser/ninja-tables/tags/5.0.19

Restart Required: No

Instructions:

1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find Ninja Tables and click 'Update Now'. 4. Verify version is 5.0.19 or higher.

🔧 Temporary Workarounds

Disable vulnerable plugin

all

Temporarily disable Ninja Tables plugin until patched

wp plugin deactivate ninja-tables

Web Application Firewall rule

all

Block requests containing suspicious serialized data in args[callback] parameter

🧯 If You Can't Patch

Implement strict input validation to reject serialized objects in callback parameters
Deploy web application firewall with rules to detect and block PHP object injection attempts

🔍 How to Verify

Check if Vulnerable:

Check WordPress admin panel → Plugins → Ninja Tables version. If version is 5.0.18 or lower, you are vulnerable.

Check Version:

wp plugin get ninja-tables --field=version

Verify Fix Applied:

After updating, confirm Ninja Tables version is 5.0.19 or higher in WordPress admin panel.

📡 Detection & Monitoring

Log Indicators:

Unusual POST requests to WordPress endpoints with args[callback] parameter containing serialized data
PHP errors related to unserialize() or unexpected object instantiation

Network Indicators:

HTTP requests with serialized PHP objects in parameters
Unusual traffic patterns to WordPress admin-ajax.php or similar endpoints

SIEM Query:

source="wordpress" AND (url="*args[callback]*" OR message="*unserialize*" OR message="*__destruct*")

📊 Metadata

CVE ID: CVE-2025-2939

CVSS v3 Score: 5.6 (MEDIUM)

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

CWE: CWE-502

EPSS Score: 0.15% exploit probability (34.9th percentile)

Published: June 3, 2025

Last Updated: July 10, 2025

🔗 References

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