Critical Vulnerability Impacting Over 100K Sites Patched in ...

[carlospolop]

🤖 Automated Content Update

This PR was automatically generated by the HackTricks News Bot based on a technical blog post.

📝 Source Information

• Blog URL: https://patchstack.com/articles/critical-vulnerability-impacting-over-100k-sites-patched-in-everest-forms-plugin/
• Blog Title: Critical Vulnerability Impacting Over 100K Sites Patched in Everest Forms Plugin
• Suggested Section: generic-hacking/php-object-injection.md

🎯 Content Summary

Everest Forms Unauthenticated PHP Object Injection (CVE-2025-52709)

Everest Forms versions 3.2.2 and earlier suffer from an unauthenticated PHP Object Injection vulnerability (CVE-2025-52709) when an Administrator views form submissions on PHP < 7.1. This flaw allows attackers to inject and instantiate arbitrary PHP objects, leading to remote code execution.

Vulnerability Overview

The plugin’s custom wrapper evf_maybe_unse...

🔧 Technical Details

When PHP’s unserialize() is invoked without the allowed_classes option, any serialized object string can instantiate arbitrary classes and set their properties. If those classes implement magic methods like __wakeup() or __destruct(), an attacker’s crafted payload can execute arbitrary code or perform unauthorized actions upon object destruction or initialization.

🤖 Agent Actions

Added comprehensive coverage of PHP unserialize() security options and the Everest Forms CVE-2025-52709 object-injection case study.

Key updates in src/pentesting-web/deserialization/README.md:

1. New subsection “Preventing PHP Object Injection with allowed_classes”
   • Explains allowed_classes mitigation, legacy PHP risk, secure/whitelist examples.
   • Real-world exploit walk-through of Everest Forms ≤ 3.2.2 wrapper logic and RCE payload.
   • Take-away checklist for developers/auditors.

2. Inserted Patchstack advisory reference into the References list.

These additions reinforce existing PHP deserialization content without creating redundant pages.

✅ Review Checklist

• Content is technically accurate
• Formatting follows HackTricks style guidelines
• Links and references are working
• Content adds educational value
• No sensitive information is exposed

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This PR was automatically created by the HackTricks Feed Bot. Please review the changes carefully before merging.

[carlospolop]

🔗 Additional Context

Original Blog Post: https://patchstack.com/articles/critical-vulnerability-impacting-over-100k-sites-patched-in-everest-forms-plugin/

Content Categories: Based on the analysis, this content was categorized under "generic-hacking/php-object-injection.md".

Repository Maintenance:

• MD Files Formatting: 865 files processed

Review Notes:

• This content was automatically processed and may require human review for accuracy
• Check that the placement within the repository structure is appropriate
• Verify that all technical details are correct and up-to-date
• All .md files have been checked for proper formatting (headers, includes, etc.)

Bot Version: HackTricks News Bot v1.0

[carlospolop]

merge