CVE-2026-1405

9.8 CRITICAL

📋 TL;DR

The Slider Future WordPress plugin allows unauthenticated attackers to upload arbitrary files due to missing file type validation. This vulnerability affects all WordPress sites using Slider Future versions 1.0.5 and earlier, potentially leading to remote code execution.

💻 Affected Systems

Products:
  • Slider Future WordPress Plugin
Versions: All versions up to and including 1.0.5
Operating Systems: Any OS running WordPress
Default Config Vulnerable: ⚠️ Yes
Notes: Affects all WordPress installations with the vulnerable plugin version, regardless of configuration.

⚠️ 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

Complete server compromise through remote code execution, allowing attackers to install malware, steal data, or create backdoors.

🟠

Likely Case

Attackers upload web shells to gain persistent access, deface websites, or use the server for malicious activities.

🟢

If Mitigated

If proper file upload restrictions and web application firewalls are in place, exploitation attempts would be blocked.

🌐 Internet-Facing: HIGH - WordPress sites are typically internet-facing, and the vulnerability requires no authentication.
🏢 Internal Only: LOW - This primarily affects public-facing WordPress installations.

🎯 Exploit Status

Public PoC: ⚠️ Yes
Weaponized: LIKELY
Unauthenticated Exploit: ⚠️ Yes
Complexity: LOW

Simple file upload exploitation with publicly available proof-of-concept code.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: 1.0.6 or later

Vendor Advisory: https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3078479%40slider-future&new=3078479%40slider-future

Restart Required: No

Instructions:

1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find Slider Future and update to version 1.0.6 or later. 4. Alternatively, delete the plugin if not needed.

🔧 Temporary Workarounds

Disable Plugin

all

Temporarily disable the Slider Future plugin until patched.

wp plugin deactivate slider-future

Web Application Firewall Rule

all

Block requests to the vulnerable upload endpoint.

Block POST requests to /wp-content/plugins/slider-future/upload endpoints

🧯 If You Can't Patch

  • Remove the Slider Future plugin completely from the WordPress installation
  • Implement strict file upload restrictions at the web server level

🔍 How to Verify

Check if Vulnerable:

Check WordPress admin panel → Plugins → Slider Future version. If version is 1.0.5 or earlier, you are vulnerable.

Check Version:

wp plugin list --name=slider-future --field=version

Verify Fix Applied:

Confirm Slider Future plugin version is 1.0.6 or later in WordPress admin panel.

📡 Detection & Monitoring

Log Indicators:

  • Multiple POST requests to slider-future upload endpoints
  • Uploads of non-image file types to plugin directories
  • Unusual file creations in wp-content/uploads/slider-future/

Network Indicators:

  • POST requests to /wp-content/plugins/slider-future/* with file uploads
  • Traffic to unexpected PHP files in plugin directories

SIEM Query:

source="web_server" AND (uri_path="/wp-content/plugins/slider-future/" AND method="POST")

🔗 References

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