CVE-2022-1505 – The RSVPMaker WordPress plugin contains an unau... (How to Fix)

📋 TL;DR

The RSVPMaker WordPress plugin contains an unauthenticated SQL injection vulnerability that allows attackers to execute arbitrary SQL queries without authentication. This enables data theft from the WordPress database, affecting all WordPress sites using vulnerable versions of the RSVPMaker plugin.

💻 Affected Systems

Products:

RSVPMaker WordPress Plugin

Versions: All versions up to and including 9.2.6

Operating Systems: All platforms running WordPress

Default Config Vulnerable: ⚠️ Yes

Notes: Affects any WordPress installation with RSVPMaker plugin enabled, regardless of WordPress version or operating system.

📦 What is this software?

Rsvpmaker by Carrcommunications

View all CVEs affecting Rsvpmaker →

⚠️ Risk & Real-World Impact

🔴

Worst Case

Complete database compromise including user credentials, sensitive content, and potential privilege escalation leading to full site takeover.

🟠

Likely Case

Extraction of sensitive data including user emails, passwords (hashed), and private content from the database.

🟢

If Mitigated

Limited impact with proper network controls and database permissions, but still potential for information disclosure.

🌐 Internet-Facing: HIGH

🏢 Internal Only: MEDIUM

🎯 Exploit Status

Public PoC: ⚠️ Yes

Weaponized: LIKELY

Unauthenticated Exploit: ⚠️ Yes

Complexity: LOW

SQL injection via API endpoints requires no authentication, making exploitation trivial for attackers.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: 9.2.7 and later

Vendor Advisory: https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=2715095%40rsvpmaker&new=2715095%40rsvpmaker

Restart Required: No

Instructions:

1. Log into WordPress admin panel
2. Navigate to Plugins → Installed Plugins
3. Find RSVPMaker and click 'Update Now'
4. Verify version is 9.2.7 or higher

🔧 Temporary Workarounds

Disable RSVPMaker Plugin

all

Temporarily disable the vulnerable plugin until patching is possible

wp plugin deactivate rsvpmaker

Restrict API Access

all

Block access to RSVPMaker API endpoints via web server configuration

# Add to .htaccess for Apache:
<Files "rsvpmaker-api-endpoints.php">
    Require all denied
</Files>
# Add to nginx config:
location ~* rsvpmaker-api-endpoints\.php$ {
    deny all;
}

🧯 If You Can't Patch

Disable the RSVPMaker plugin immediately
Implement WAF rules to block SQL injection patterns targeting the RSVPMaker API endpoints

🔍 How to Verify

Check if Vulnerable:

Check WordPress admin panel → Plugins → RSVPMaker version. If version is 9.2.6 or lower, system is vulnerable.

Check Version:

wp plugin get rsvpmaker --field=version

Verify Fix Applied:

Verify RSVPMaker plugin version is 9.2.7 or higher in WordPress admin panel.

📡 Detection & Monitoring

Log Indicators:

Unusual SQL errors in WordPress logs
Multiple requests to /wp-content/plugins/rsvpmaker/rsvpmaker-api-endpoints.php
Requests with SQL injection patterns (UNION, SELECT, etc.)

Network Indicators:

HTTP requests to RSVPMaker API endpoints with SQL payloads
Unusual database query patterns from web server

SIEM Query:

source="wordpress.log" AND "rsvpmaker-api-endpoints.php" AND ("UNION" OR "SELECT" OR "FROM" OR "WHERE")

📊 Metadata

CVE ID: CVE-2022-1505

CVSS v3 Score: 9.8 (CRITICAL)

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

CWE: CWE-89

Published: May 10, 2022

Last Updated: May 5, 2025

🔗 References

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