CVE-2024-56292

5.9 MEDIUM

📋 TL;DR

This stored cross-site scripting (XSS) vulnerability in the Email Reminders WordPress plugin allows attackers to inject malicious scripts into web pages that are then executed when other users view those pages. All WordPress sites using Email Reminders plugin versions up to 2.0.5 are affected. The vulnerability requires user interaction but can lead to session hijacking or unauthorized actions.

💻 Affected Systems

Products:
  • Email Reminders WordPress Plugin
Versions: n/a through 2.0.5
Operating Systems: All operating systems running WordPress
Default Config Vulnerable: ⚠️ Yes
Notes: Only affects WordPress installations with the Email Reminders plugin installed and activated.

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

⚠️ Risk & Real-World Impact

🔴

Worst Case

Attackers could steal administrator session cookies, take over WordPress admin accounts, install backdoors, deface websites, or redirect users to malicious sites.

🟠

Likely Case

Attackers inject malicious JavaScript that steals user session cookies or credentials when users view compromised pages, potentially leading to account compromise.

🟢

If Mitigated

With proper input validation and output encoding, malicious scripts would be neutralized before execution, preventing any impact.

🌐 Internet-Facing: HIGH
🏢 Internal Only: MEDIUM

🎯 Exploit Status

Public PoC: ✅ No
Weaponized: LIKELY
Unauthenticated Exploit: ✅ No
Complexity: LOW

Stored XSS vulnerabilities are commonly exploited, though specific exploit details for this CVE aren't publicly documented.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: Versions after 2.0.5

Vendor Advisory: https://patchstack.com/database/wordpress/plugin/email-reminders/vulnerability/wordpress-email-reminders-plugin-2-0-5-cross-site-scripting-xss-vulnerability?_s_id=cve

Restart Required: No

Instructions:

1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find Email Reminders plugin. 4. Click 'Update Now' if update available. 5. If no update available, deactivate and remove plugin until patch is released.

🔧 Temporary Workarounds

Disable Email Reminders Plugin

all

Temporarily deactivate the vulnerable plugin until patched version is available.

wp plugin deactivate email-reminders

Implement Content Security Policy

all

Add CSP headers to restrict script execution sources.

Add to .htaccess: Header set Content-Security-Policy "default-src 'self'; script-src 'self'"
Add to wp-config.php: header("Content-Security-Policy: default-src 'self'; script-src 'self'");

🧯 If You Can't Patch

  • Implement web application firewall (WAF) rules to block XSS payloads
  • Restrict plugin access to trusted users only and monitor for suspicious activity

🔍 How to Verify

Check if Vulnerable:

Check WordPress admin panel → Plugins → Email Reminders → Version. If version is 2.0.5 or earlier, you are vulnerable.

Check Version:

wp plugin get email-reminders --field=version

Verify Fix Applied:

After updating, verify plugin version is higher than 2.0.5 in WordPress admin panel.

📡 Detection & Monitoring

Log Indicators:

  • Unusual POST requests to plugin endpoints with script tags
  • Multiple failed login attempts following plugin access

Network Indicators:

  • Unexpected JavaScript payloads in HTTP requests to /wp-content/plugins/email-reminders/

SIEM Query:

source="wordpress.log" AND "email-reminders" AND ("<script>" OR "javascript:" OR "onerror=" OR "onload=")

🔗 References

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