CVE-2026-3523 – This SQL injection vulnerability in the Apocaly... (How to Fix)

Q: What is the severity of CVE-2026-3523?

CVE-2026-3523 has a CVSS score of 4.9 (MEDIUM). This SQL injection vulnerability in the Apocalypse Meow WordPress plugin allows authenticated attackers with Administrator privileges to inject malicious SQL queries through the 'type' parameter. Attackers can extract sensitive data from the database. Only WordPress sites using vulnerable versions of the Apocalypse Meow plugin are affected.

📋 TL;DR

This SQL injection vulnerability in the Apocalypse Meow WordPress plugin allows authenticated attackers with Administrator privileges to inject malicious SQL queries through the 'type' parameter. Attackers can extract sensitive data from the database. Only WordPress sites using vulnerable versions of the Apocalypse Meow plugin are affected.

💻 Affected Systems

Products:

Apocalypse Meow WordPress Plugin

Versions: All versions up to and including 22.1.0

Operating Systems: Any OS running WordPress

Default Config Vulnerable: ⚠️ Yes

Notes: Requires WordPress installation with Apocalypse Meow plugin enabled. Attacker must have Administrator-level access.

⚠️ Manual Verification Required

This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.

Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).

🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.

Recommended Actions:

Review the CVE details at NVD
Check vendor security advisories for your specific version
Test if the vulnerability is exploitable in your environment
Consider updating to the latest version as a precaution

⚠️ Risk & Real-World Impact

🔴

Worst Case

Administrator-level attackers could extract all database contents including user credentials, sensitive configuration data, and potentially gain full database control.

🟠

Likely Case

Malicious administrators or compromised admin accounts could extract sensitive user data, configuration secrets, or manipulate database content.

🟢

If Mitigated

With proper access controls and monitoring, impact is limited to authorized administrators who would already have significant access.

🌐 Internet-Facing: MEDIUM

🏢 Internal Only: MEDIUM

🎯 Exploit Status

Public PoC: ✅ No

Weaponized: LIKELY

Unauthenticated Exploit: ✅ No

Complexity: LOW

Exploitation requires authenticated Administrator access. The vulnerability is well-documented with specific code locations identified.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: Versions after 22.1.0

Vendor Advisory: https://plugins.trac.wordpress.org/browser/apocalypse-meow/

Restart Required: No

Instructions:

1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find Apocalypse Meow plugin. 4. Click 'Update Now' if update available. 5. If no update available, deactivate and delete plugin, then install latest version from WordPress repository.

🔧 Temporary Workarounds

Disable Apocalypse Meow Plugin

all

Temporarily disable the vulnerable plugin until patched version is available

wp plugin deactivate apocalypse-meow

Restrict Administrator Access

all

Implement strict access controls and monitoring for Administrator accounts

🧯 If You Can't Patch

Implement Web Application Firewall (WAF) rules to block SQL injection patterns
Enable database query logging and monitor for suspicious SQL patterns

🔍 How to Verify

Check if Vulnerable:

Check WordPress admin panel → Plugins → Apocalypse Meow → Version. If version is 22.1.0 or earlier, you are vulnerable.

Check Version:

wp plugin get apocalypse-meow --field=version

Verify Fix Applied:

After update, verify plugin version is higher than 22.1.0 in WordPress admin panel.

📡 Detection & Monitoring

Log Indicators:

Unusual SQL queries in WordPress or database logs
Multiple failed login attempts followed by successful Administrator login
Unusual database access patterns from WordPress application

Network Indicators:

POST requests to /wp-admin/admin-ajax.php with unusual 'type' parameter values
SQL error messages in HTTP responses

SIEM Query:

source="wordpress.log" AND "admin-ajax.php" AND "type=" AND ("sql" OR "database" OR "query")

📊 Metadata

CVE ID: CVE-2026-3523

CVSS v3 Score: 4.9 (MEDIUM)

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

CWE: CWE-89

Published: March 5, 2026

Last Updated: March 5, 2026

🔗 References

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