CVE-2024-43327 – This vulnerability allows attackers to inject m... (How to Fix)

Q: What is the severity of CVE-2024-43327?

CVE-2024-43327 has a CVSS score of 7.1 (HIGH). This vulnerability allows attackers to inject malicious scripts into web pages generated by the Invite Anyone WordPress plugin. When users visit a specially crafted URL, the script executes in their browser, potentially stealing session cookies or performing actions on their behalf. All WordPress sites using vulnerable versions of the Invite Anyone plugin are affected.

📋 TL;DR

This vulnerability allows attackers to inject malicious scripts into web pages generated by the Invite Anyone WordPress plugin. When users visit a specially crafted URL, the script executes in their browser, potentially stealing session cookies or performing actions on their behalf. All WordPress sites using vulnerable versions of the Invite Anyone plugin are affected.

💻 Affected Systems

Products:

WordPress Invite Anyone plugin

Versions: n/a through 1.4.7

Operating Systems: Any OS running WordPress

Default Config Vulnerable: ⚠️ Yes

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

📦 What is this software?

Invite Anyone by Teleogistic

View all CVEs affecting Invite Anyone →

⚠️ Risk & Real-World Impact

🔴

Worst Case

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

🟠

Likely Case

Attackers steal user session cookies to hijack accounts, perform phishing attacks, or inject malicious content into vulnerable pages.

🟢

If Mitigated

With proper input validation and output encoding, malicious scripts are neutralized before reaching users' browsers.

🌐 Internet-Facing: HIGH

🏢 Internal Only: MEDIUM

🎯 Exploit Status

Public PoC: ⚠️ Yes

Weaponized: LIKELY

Unauthenticated Exploit: ⚠️ Yes

Complexity: LOW

Reflected XSS vulnerabilities are commonly exploited and require minimal technical skill.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: 1.4.8 or later

Vendor Advisory: https://patchstack.com/database/vulnerability/invite-anyone/wordpress-invite-anyone-plugin-1-4-7-reflected-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 'Invite Anyone' and click 'Update Now'. 4. Verify plugin version is 1.4.8 or higher.

🔧 Temporary Workarounds

Disable Invite Anyone plugin

all

Temporarily disable the vulnerable plugin until patching is possible

wp plugin deactivate invite-anyone

Implement WAF rules

all

Add web application firewall rules to block XSS payloads

🧯 If You Can't Patch

Implement Content Security Policy (CSP) headers to restrict script execution
Use WordPress security plugins with XSS protection features

🔍 How to Verify

Check if Vulnerable:

Check WordPress admin panel > Plugins > Installed Plugins for Invite Anyone version

Check Version:

wp plugin get invite-anyone --field=version

Verify Fix Applied:

Verify plugin version is 1.4.8 or higher in WordPress admin

📡 Detection & Monitoring

Log Indicators:

Unusual GET/POST requests with script tags or JavaScript in parameters
Multiple failed login attempts from same IP

Network Indicators:

HTTP requests containing <script>, javascript:, or encoded XSS payloads in URL parameters

SIEM Query:

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

📊 Metadata

CVE ID: CVE-2024-43327

CVSS v3 Score: 7.1 (HIGH)

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

CWE: CWE-79

Published: August 18, 2024

Last Updated: September 18, 2024

🔗 References

https://patchstack.com/database/vulnerability/invite-anyone/wordpress-invite-anyone-plugin-1-4-7-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve Third Party Advisory

📤 Share & Export

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🔗 Related Vulnerabilities

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