CVE-2025-11265 – This vulnerability allows authenticated WordPre... (How to Fix)

Q: What is the severity of CVE-2025-11265?

CVE-2025-11265 has a CVSS score of 6.4 (MEDIUM). This vulnerability allows authenticated WordPress users with Contributor-level access or higher to inject malicious scripts into web pages using the VK All in One Expansion Unit plugin. The stored XSS payload executes when other users visit the compromised pages, potentially leading to session hijacking, defacement, or malware distribution. All WordPress sites using vulnerable plugin versions are affected.

📋 TL;DR

This vulnerability allows authenticated WordPress users with Contributor-level access or higher to inject malicious scripts into web pages using the VK All in One Expansion Unit plugin. The stored XSS payload executes when other users visit the compromised pages, potentially leading to session hijacking, defacement, or malware distribution. All WordPress sites using vulnerable plugin versions are affected.

💻 Affected Systems

Products:

VK All in One Expansion Unit WordPress plugin

Versions: All versions up to and including 9.112.1

Operating Systems: All operating systems running WordPress

Default Config Vulnerable: ⚠️ Yes

Notes: Requires WordPress installation with the vulnerable plugin enabled. Contributor role or higher access 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:

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

⚠️ Risk & Real-World Impact

🔴

Worst Case

Attackers could steal administrator credentials, install backdoors, redirect users to malicious sites, or completely compromise the WordPress site and potentially the underlying server.

🟠

Likely Case

Malicious scripts steal user session cookies, redirect visitors to phishing pages, or display unwanted advertisements. Site defacement and reputation damage are common outcomes.

🟢

If Mitigated

With proper user role management and content review processes, the impact is limited to potential defacement of specific pages rather than full site compromise.

🌐 Internet-Facing: HIGH

🏢 Internal Only: MEDIUM

🎯 Exploit Status

Public PoC: ✅ No

Weaponized: LIKELY

Unauthenticated Exploit: ✅ No

Complexity: LOW

Exploitation requires authenticated access but is straightforward once an attacker has Contributor-level credentials. The vulnerability is publicly documented with code references.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: Versions after 9.112.1

Vendor Advisory: https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3394731%40vk-all-in-one-expansion-unit%2Ftrunk&old=3385606%40vk-all-in-one-expansion-unit%2Ftrunk&sfp_email=&sfph_mail=#file2

Restart Required: No

Instructions:

1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find 'VK All in One Expansion Unit'. 4. Click 'Update Now' if available. 5. Alternatively, download latest version from WordPress repository and manually update.

🔧 Temporary Workarounds

Disable vulnerable plugin

all

Temporarily deactivate the VK All in One Expansion Unit plugin until patched

wp plugin deactivate vk-all-in-one-expansion-unit

Restrict user roles

all

Temporarily remove Contributor role access or limit to trusted users only

🧯 If You Can't Patch

Implement strict content review process for all posts/pages created by Contributor-level users
Install and configure a web application firewall (WAF) with XSS protection rules

🔍 How to Verify

Check if Vulnerable:

Check WordPress admin panel → Plugins → Installed Plugins → VK All in One Expansion Unit version number

Check Version:

wp plugin get vk-all-in-one-expansion-unit --field=version

Verify Fix Applied:

Verify plugin version is 9.112.2 or higher in WordPress admin panel

📡 Detection & Monitoring

Log Indicators:

Unusual POST requests to wp-admin/admin-ajax.php with vkExUnit_cta_url or vkExUnit_cta_button_text parameters containing script tags
Multiple page edits by Contributor-level users in short timeframes

Network Indicators:

Outbound connections to suspicious domains from WordPress pages
JavaScript payloads in page responses containing eval() or document.write() calls

SIEM Query:

source="wordpress_logs" AND ("vkExUnit_cta_url" OR "vkExUnit_cta_button_text") AND ("<script>" OR "javascript:" OR "onload=" OR "onerror=")

📊 Metadata

CVE ID: CVE-2025-11265

CVSS v3 Score: 6.4 (MEDIUM)

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

CWE: CWE-80

EPSS Score: 0.05% exploit probability (14.9th percentile)

Published: November 18, 2025

Last Updated: November 18, 2025

🔗 References

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