Q: Is it fixed officially? (Patch/Mitigation)

✅ **Fixed**: Yes. 🔧 **Patch**: Upgrade to **version 6.4.0** or later. 🔗 **Ref**: See GitHub Release 6.4.0 for details.

Q: What if no patch? (Workaround)

🛡️ **Workaround**: If upgrade is impossible, implement strict server-side MIME validation. 🚫 **Block**: Reject files with PHP extensions or non-image MIME types. 📂 **Store**: Move uploads outside web root.

Q: Is it urgent? (Priority Suggestion)

🔥 **Priority**: **CRITICAL**. 📈 **CVSS**: 9.8 (High). ⏳ **Action**: Patch immediately. 🚨 **Urgency**: High due to RCE risk and low exploitation barrier.

Question 1

What is this vulnerability? (Essence + Consequences)

Accepted Answer

🚨 **Essence**: Laravel-Mediable accepts client-supplied MIME types.
💥 **Consequence**: Attackers upload PHP files disguised as images.
⚠️ **Result**: Remote Code Execution (RCE) on the server.

Question 2

Root Cause? (CWE/Flaw)

Accepted Answer

🛡️ **CWE**: CWE-434 (Unrestricted Upload of File with Dangerous Type).
🔍 **Flaw**: The package trusts the `Content-Type` header from the client instead of validating the actual file content.

Question 3

Who is affected? (Versions/Components)

Accepted Answer

📦 **Vendor**: Plank.
📦 **Product**: laravel-mediable.
📉 **Affected**: Versions **6.4.0 and earlier**.
✅ **Safe**: Version 6.4.0+ (see references).

Question 4

What can hackers do? (Privileges/Data)

Accepted Answer

👑 **Privileges**: Full RCE as the web server user.
💾 **Data**: Complete compromise of server data, database, and backend systems.
🔓 **Access**: No authentication required (CVSS PR:N).

Question 5

Is exploitation threshold high? (Auth/Config)

Accepted Answer

📉 **Threshold**: **LOW**.
🔑 **Auth**: None required (PR:N).
🎯 **Complexity**: Low (AC:L).
👤 **User Interaction**: None needed (UI:N).
🌐 **Network**: Remote (AV:N).

Question 6

Is there a public Exp? (PoC/Wild Exploitation)

Accepted Answer

📜 **Public Exp**: No PoC listed in data.
🌍 **Wild Exp**: Likely possible due to low complexity.
⚠️ **Risk**: High potential for automated scanning and exploitation.

Question 7

How to self-check? (Features/Scanning)

Accepted Answer

🔍 **Check**: Scan for `laravel-mediable` usage in `composer.json`.
📊 **Version**: Verify installed version is < 6.4.0.
📂 **Files**: Monitor uploads for PHP extensions disguised as images.

Question 8

Is it fixed officially? (Patch/Mitigation)

Accepted Answer

✅ **Fixed**: Yes.
🔧 **Patch**: Upgrade to **version 6.4.0** or later.
🔗 **Ref**: See GitHub Release 6.4.0 for details.

Question 9

What if no patch? (Workaround)

Accepted Answer

🛡️ **Workaround**: If upgrade is impossible, implement strict server-side MIME validation.
🚫 **Block**: Reject files with PHP extensions or non-image MIME types.
📂 **Store**: Move uploads outside web root.

Question 10

Is it urgent? (Priority Suggestion)

Accepted Answer

🔥 **Priority**: **CRITICAL**.
📈 **CVSS**: 9.8 (High).
⏳ **Action**: Patch immediately.
🚨 **Urgency**: High due to RCE risk and low exploitation barrier.

Goal Reached Thanks to every supporter — we hit 100%!

CVE-2026-4809 — AI Deep Analysis Summary

Q1What is this vulnerability? (Essence + Consequences)

Q2Root Cause? (CWE/Flaw)

Q3Who is affected? (Versions/Components)

Q4What can hackers do? (Privileges/Data)

Q5Is exploitation threshold high? (Auth/Config)

Q6Is there a public Exp? (PoC/Wild Exploitation)

Q7How to self-check? (Features/Scanning)

Q8Is it fixed officially? (Patch/Mitigation)

Q9What if no patch? (Workaround)

Q10Is it urgent? (Priority Suggestion)

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