CVE-2025-1625

5.4 MEDIUM

📋 TL;DR

The Qi Blocks WordPress plugin before version 1.4 contains a stored cross-site scripting (XSS) vulnerability in its Counter block. This allows authenticated users with contributor-level permissions or higher to inject malicious scripts into pages/posts, which execute when other users view the content. WordPress sites using vulnerable versions of this plugin are affected.

💻 Affected Systems

Products:
  • Qi Blocks WordPress Plugin
Versions: All versions before 1.4
Operating Systems: All
Default Config Vulnerable: ⚠️ Yes
Notes: Requires WordPress installation with the Qi Blocks plugin enabled and at least one user with contributor role or higher.

📦 What is this software?

⚠️ Risk & Real-World Impact

🔴

Worst Case

An attacker with contributor access could inject malicious scripts that steal administrator credentials, redirect users to phishing sites, or perform actions on behalf of authenticated users, potentially leading to complete site compromise.

🟠

Likely Case

Malicious contributors or compromised accounts inject tracking scripts, deface content, or steal session cookies from users viewing affected pages.

🟢

If Mitigated

With proper user access controls and content sanitization, the impact is limited to potential content manipulation within the contributor's own posts.

🌐 Internet-Facing: HIGH
🏢 Internal Only: MEDIUM

🎯 Exploit Status

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

Exploitation requires contributor-level access. The vulnerability is in output sanitization, making exploitation straightforward once authenticated.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: 1.4

Vendor Advisory: https://wpscan.com/vulnerability/288208c4-e9ca-4b79-88e7-fb415a726fce/

Restart Required: No

Instructions:

1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find 'Qi Blocks' and check if version is below 1.4. 4. Click 'Update Now' if available, or download version 1.4+ from WordPress repository. 5. Activate the updated plugin.

🔧 Temporary Workarounds

Remove Contributor Access

all

Temporarily restrict contributor role permissions or disable user registration until patch is applied.

wp role reset contributor
wp option update users_can_register 0

Disable Qi Blocks Plugin

all

Deactivate the vulnerable plugin until patched version is available.

wp plugin deactivate qi-blocks

🧯 If You Can't Patch

  • Implement strict content security policy (CSP) headers to restrict script execution
  • Enable WordPress security plugins that sanitize output and monitor for XSS attempts

🔍 How to Verify

Check if Vulnerable:

Check WordPress admin panel under Plugins > Installed Plugins for Qi Blocks version. If version is below 1.4, the site is vulnerable.

Check Version:

wp plugin get qi-blocks --field=version

Verify Fix Applied:

After updating, verify Qi Blocks plugin shows version 1.4 or higher in WordPress admin plugins list.

📡 Detection & Monitoring

Log Indicators:

  • Unusual POST requests to wp-admin/post.php with script tags in content
  • Multiple failed login attempts followed by successful contributor login

Network Indicators:

  • Outbound connections to suspicious domains from WordPress server
  • Unexpected JavaScript in page responses containing Counter block

SIEM Query:

source="wordpress.log" AND ("qi-blocks" OR "counter block") AND ("script" OR "javascript:" OR "onerror=")

🔗 References

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