Question 1

What is this vulnerability? (Essence + Consequences)

Accepted Answer

🚨 **Essence**: Blind SQL Injection in Ghost CMS.
💥 **Consequences**: Unauthenticated attackers can execute arbitrary database reads. Critical risk to data integrity and confidentiality.

Question 2

Root Cause? (CWE/Flaw)

Accepted Answer

🛡️ **Root Cause**: CWE-89 (SQL Injection).
🔍 **Flaw**: The `/ghost/api/content/tags/` endpoint accepts the `filter` parameter without proper validation or sanitization.

Question 3

Who is affected? (Versions/Components)

Accepted Answer

📦 **Affected**: TryGhost Ghost CMS.
📅 **Versions**: 3.24.0 through 6.19.0.
✅ **Safe**: Version 6.19.1 and above are patched.

Question 4

What can hackers do? (Privileges/Data)

Accepted Answer

🕵️ **Attacker Actions**: Read arbitrary data from the database.
🔓 **Privileges**: No authentication required (PR:N).
📊 **Impact**: High Confidentiality & Integrity impact; Low Availability impact.

Question 5

Is exploitation threshold high? (Auth/Config)

Accepted Answer

📉 **Threshold**: LOW.
🌐 **Access**: Network accessible (AV:N).
🔑 **Auth**: None required (PR:N).
👁️ **UI**: No user interaction needed (UI:N).
🎯 **Complexity**: Low (AC:L).

Question 6

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

Accepted Answer

🔓 **Exploit**: Yes.
📜 **PoC**: Available via ProjectDiscovery Nuclei templates.
🧪 **Method**: Boolean-based blind SQL injection payload sent to the filter parameter.

Question 7

How to self-check? (Features/Scanning)

Accepted Answer

🔍 **Self-Check**: Scan for Ghost CMS versions 3.24.0-6.19.0.
🧪 **Test**: Use Nuclei template `CVE-2026-26980.yaml` to probe the `/ghost/api/content/tags/` endpoint with boolean payloads.

Question 8

Is it fixed officially? (Patch/Mitigation)

Accepted Answer

🛠️ **Fix**: Officially patched in **v6.19.1**.
🔗 **Commit**: See GitHub commit `30868d6`.
📢 **Advisory**: GHSA-w52v-v783-gw97.

Question 9

What if no patch? (Workaround)

Accepted Answer

🚧 **Workaround**: If patching is impossible, restrict network access to the `/ghost/api/content/tags/` endpoint.
🛡️ **WAF**: Implement strict input filtering for the `filter` parameter to block SQL syntax.

Question 10

Is it urgent? (Priority Suggestion)

Accepted Answer

⚡ **Urgency**: HIGH.
🚨 **Priority**: Immediate patching recommended.
📉 **Risk**: CVSS Score indicates High severity with easy exploitation and no auth required.

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

CVE-2026-26980 — 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