CVE-2025-27286

9.8 CRITICAL

📋 TL;DR

This vulnerability allows remote attackers to execute arbitrary code through PHP object injection via deserialization of untrusted data in the Saoshyant Slider WordPress plugin. All WordPress sites using affected versions of this plugin are vulnerable to complete system compromise.

💻 Affected Systems

Products:
  • Saoshyant Slider WordPress Plugin
Versions: All versions up to and including 3.0
Operating Systems: Any OS running WordPress
Default Config Vulnerable: ⚠️ Yes
Notes: All WordPress installations with the vulnerable plugin enabled are affected 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

Full remote code execution leading to complete server takeover, data exfiltration, and lateral movement within the network.

🟠

Likely Case

Remote code execution allowing attackers to install backdoors, deface websites, or deploy ransomware.

🟢

If Mitigated

Limited impact if proper web application firewalls and input validation are in place, though exploitation may still succeed.

🌐 Internet-Facing: HIGH - WordPress plugins are typically exposed to the internet and this vulnerability requires no authentication.
🏢 Internal Only: MEDIUM - Internal WordPress installations could still be exploited by malicious insiders or compromised internal systems.

🎯 Exploit Status

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

Public exploit details are available and the vulnerability requires no authentication, making exploitation trivial for attackers.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: Version after 3.0 (check WordPress plugin repository)

Vendor Advisory: https://patchstack.com/database/wordpress/plugin/saoshyant-slider/vulnerability/wordpress-saoshyant-slider-plugin-3-0-php-object-injection-vulnerability?_s_id=cve

Restart Required: No

Instructions:

1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find Saoshyant Slider and update to latest version. 4. If no update is available, disable and remove the plugin immediately.

🔧 Temporary Workarounds

Disable Saoshyant Slider Plugin

all

Immediately disable the vulnerable plugin to prevent exploitation

wp plugin deactivate saoshyant-slider

Web Application Firewall Rule

all

Block requests containing serialized PHP object patterns

Add WAF rule to block requests with patterns like O:[0-9]+:"
Block POST requests to wp-content/plugins/saoshyant-slider/

🧯 If You Can't Patch

  • Immediately disable or remove the Saoshyant Slider plugin from all WordPress installations
  • Implement strict input validation and sanitization for all user-supplied data in the application

🔍 How to Verify

Check if Vulnerable:

Check WordPress admin panel → Plugins → Installed Plugins for Saoshyant Slider version 3.0 or earlier

Check Version:

wp plugin get saoshyant-slider --field=version

Verify Fix Applied:

Verify plugin version is higher than 3.0 or plugin is completely removed from the plugins directory

📡 Detection & Monitoring

Log Indicators:

  • POST requests to wp-content/plugins/saoshyant-slider/ with serialized data
  • PHP errors related to unserialize() or object injection
  • Unusual file creation in WordPress directories

Network Indicators:

  • HTTP requests containing serialized PHP object patterns (O:[0-9]+:")
  • Traffic to known exploit servers from WordPress instances

SIEM Query:

source="web_logs" AND (uri="*saoshyant-slider*" OR post_data="*O:[0-9]+:*")

🔗 References

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