Question 1

What is this vulnerability? (Essence + Consequences)

Accepted Answer

🚨 **Essence**: Blind SQL Injection in ClipBucket v5.5.2-#187 and earlier.
📉 **Consequences**: Attackers can extract database content via the `/actions/ajax.php` endpoint.…

Question 2

Root Cause? (CWE/Flaw)

Accepted Answer

🛡️ **Root Cause**: CWE-89 (SQL Injection).
❌ **Flaw**: The `obj_id` parameter in `/actions/ajax.php` is **not validated or sanitized**. Malicious input bypasses security checks directly.

Question 3

Who is affected? (Versions/Components)

Accepted Answer

📦 **Affected**: MacWarrior's **ClipBucket v5**.
📅 **Version**: Specifically **5.5.2-#187** and all prior versions.
🌐 **Type**: Open-source PHP script for video sharing sites.

Question 4

What can hackers do? (Privileges/Data)

Accepted Answer

💀 **Attacker Capabilities**:
🔓 **Access**: Full database read/write potential.
👑 **Privileges**: High (CVSS H).…

Question 5

Is exploitation threshold high? (Auth/Config)

Accepted Answer

🔓 **Threshold**: **LOW**.
🚫 **Auth**: No authentication required (`PR:N`).
🌐 **Network**: Remote exploitation (`AV:N`).
👀 **UI**: No user interaction needed (`UI:N`). Easy to exploit!

Question 6

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

Accepted Answer

🚫 **Public Exploit**: **None listed** in current data (`pocs: []`).
⚠️ **Status**: While no public PoC is attached, the vulnerability type (Blind SQLi) is well-known. Exploitation tools likely exist in the wild.

Question 7

How to self-check? (Features/Scanning)

Accepted Answer

🔍 **Self-Check**:
1. Scan for `/actions/ajax.php` endpoint.
2. Test `obj_id` parameter with SQL injection payloads (e.g., `' OR 1=1--`).
3. Look for time-based delays or error responses indicating Blind SQLi.

Question 8

Is it fixed officially? (Patch/Mitigation)

Accepted Answer

✅ **Fix Status**: **Yes**.
🔗 **Source**: Official GitHub Advisory [GHSA-crpv-fmc4-j392](https://github.com/MacWarrior/clipbucket-v5/security/advisories/GHSA-crpv-fmc4-j392).…

Question 9

What if no patch? (Workaround)

Accepted Answer

🛡️ **No Patch Workaround**:
1. **WAF**: Block SQL keywords in `obj_id` parameter.
2. **Input Validation**: Strictly whitelist integer values for `obj_id`.
3.…

Question 10

Is it urgent? (Priority Suggestion)

Accepted Answer

🔥 **Urgency**: **CRITICAL**.
📈 **CVSS**: High (9.8/10 implied by H/I/H).
⚡ **Priority**: Patch immediately. Remote, unauthenticated exploitation makes this a high-priority target for attackers.

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

CVE-2026-21875 — 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)

Continue exploring