CVE-2025-12712

6.4 MEDIUM

📋 TL;DR

The Shouty WordPress plugin has a stored cross-site scripting vulnerability that allows authenticated attackers with Contributor-level access or higher to inject malicious scripts into website pages. These scripts execute whenever users view the compromised pages, potentially stealing credentials or performing unauthorized actions. All WordPress sites using Shouty plugin versions up to 0.2.1 are affected.

💻 Affected Systems

Products:
  • WordPress Shouty Plugin
Versions: All versions up to and including 0.2.1
Operating Systems: Any OS running WordPress
Default Config Vulnerable: ⚠️ Yes
Notes: Requires WordPress installation with Shouty plugin enabled. Contributor-level access or higher needed for exploitation.

⚠️ 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 credentials, take over the WordPress site, deface content, or redirect users to malicious sites, potentially leading to complete site compromise and data theft.

🟠

Likely Case

Attackers inject malicious JavaScript to steal user session cookies, perform actions as authenticated users, or display phishing content to visitors.

🟢

If Mitigated

With proper user role management and security plugins, impact is limited to content manipulation within Contributor-level permissions.

🌐 Internet-Facing: HIGH
🏢 Internal Only: MEDIUM

🎯 Exploit Status

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

Exploitation requires authenticated access but is technically simple once authenticated.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: 0.2.2 or later

Vendor Advisory: https://wordpress.org/plugins/shouty/

Restart Required: No

Instructions:

1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find Shouty plugin and click 'Update Now'. 4. Verify update to version 0.2.2 or higher.

🔧 Temporary Workarounds

Disable Shouty Plugin

all

Temporarily disable the vulnerable plugin until patched

wp plugin deactivate shouty

Restrict User Roles

all

Temporarily remove Contributor role access or limit to trusted users

🧯 If You Can't Patch

  • Remove Contributor role access entirely
  • Implement web application firewall with XSS protection rules

🔍 How to Verify

Check if Vulnerable:

Check WordPress admin panel → Plugins → Installed Plugins → Shouty version. If version is 0.2.1 or lower, you are vulnerable.

Check Version:

wp plugin get shouty --field=version

Verify Fix Applied:

After update, verify Shouty plugin shows version 0.2.2 or higher in WordPress admin.

📡 Detection & Monitoring

Log Indicators:

  • Unusual POST requests to wp-admin with shouty shortcode parameters
  • Multiple failed login attempts followed by successful Contributor login

Network Indicators:

  • JavaScript payloads in HTTP POST parameters containing shouty attributes
  • Unusual outbound connections after page views

SIEM Query:

source="wordpress.log" AND ("shouty" AND ("script" OR "javascript" OR "onclick" OR "onload"))

🔗 References

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