CVE-2025-59841 — AI Deep Analysis Summary

Q: What is this vulnerability? (Essence + Consequences)

🚨 **Essence**: Flag Forge < 2.3.1 has a session handling flaw. 💥 **Consequences**: Unauthorized operations possible. Critical integrity & confidentiality loss.

Q: Root Cause? (CWE/Flaw)

🛡️ **CWE-384**: Session Fixation/Invalidation Failure. 🔍 **Flaw**: Improper session invalidation logic allows stale sessions to persist.

Q: Who is affected? (Versions/Components)

📦 **Vendor**: FlagForgeCTF. 📉 **Affected**: Versions 2.2.0 up to (but not including) 2.3.1. 🚫 **Safe**: v2.3.1+.

Q: What can hackers do? (Privileges/Data)

👤 **Privileges**: Full unauthorized access. 📂 **Data**: High risk to Confidentiality, Integrity, and Availability. 🎯 **Impact**: Complete system compromise.

Q: Is exploitation threshold high? (Auth/Config)

⚡ **Threshold**: LOW. 🌐 **Network**: Remote (AV:N). 🔑 **Auth**: None required (PR:N). 👁️ **UI**: None required (UI:N). Easy to exploit.

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

🚫 **Public Exp**: No PoC listed in data. 🕵️ **Status**: Theoretical/Unverified wild exploitation. ⚠️ **Risk**: High due to CVSS 9.8 score.

Q: How to self-check? (Features/Scanning)

🔍 **Check**: Scan for Flag Forge instances. 📊 **Version**: Verify if version is < 2.3.1. 🧪 **Test**: Check session persistence after logout/timeout.

Q: What if no patch? (Workaround)

🚧 **Workaround**: Enforce strict session timeouts. 🧹 **Manual**: Clear server-side sessions regularly. 🛑 **Limit**: Restrict access if possible. ⚠️ **Note**: Not a full fix.

Q: Is it urgent? (Priority Suggestion)

🔥 **Priority**: CRITICAL. 🚀 **Action**: Patch IMMEDIATELY. 📅 **Published**: 2025-09-25. ⏳ **Urgency**: High due to CVSS 9.8 (Critical).

Updated May 06, 2026 CVSS 9.8 · Critical

This is a summary of the AI-generated 10-question deep analysis. The full version (longer answers, follow-up Q&A, related CVEs) requires login. Read the full analysis →

Q1What is this vulnerability? (Essence + Consequences)

🚨 **Essence**: Flag Forge < 2.3.1 has a session handling flaw. 💥 **Consequences**: Unauthorized operations possible. Critical integrity & confidentiality loss.

Q2Root Cause? (CWE/Flaw)

🛡️ **CWE-384**: Session Fixation/Invalidation Failure. 🔍 **Flaw**: Improper session invalidation logic allows stale sessions to persist.

Q3Who is affected? (Versions/Components)

📦 **Vendor**: FlagForgeCTF. 📉 **Affected**: Versions 2.2.0 up to (but not including) 2.3.1. 🚫 **Safe**: v2.3.1+.

Q4What can hackers do? (Privileges/Data)

👤 **Privileges**: Full unauthorized access. 📂 **Data**: High risk to Confidentiality, Integrity, and Availability. 🎯 **Impact**: Complete system compromise.

Q5Is exploitation threshold high? (Auth/Config)

⚡ **Threshold**: LOW. 🌐 **Network**: Remote (AV:N). 🔑 **Auth**: None required (PR:N). 👁️ **UI**: None required (UI:N). Easy to exploit.

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

🚫 **Public Exp**: No PoC listed in data. 🕵️ **Status**: Theoretical/Unverified wild exploitation. ⚠️ **Risk**: High due to CVSS 9.8 score.

Q7How to self-check? (Features/Scanning)

🔍 **Check**: Scan for Flag Forge instances. 📊 **Version**: Verify if version is < 2.3.1. 🧪 **Test**: Check session persistence after logout/timeout.

Q8Is it fixed officially? (Patch/Mitigation)

✅ **Fixed**: Yes. 📝 **Patch**: Upgrade to v2.3.1 or later. 🔗 **Ref**: GitHub Advisory GHSA-h6pr-4cwv-6cjg. 🛠️ **Commit**: 304b6c82a4f7...

Q9What if no patch? (Workaround)

🚧 **Workaround**: Enforce strict session timeouts. 🧹 **Manual**: Clear server-side sessions regularly. 🛑 **Limit**: Restrict access if possible. ⚠️ **Note**: Not a full fix.

Q10Is it urgent? (Priority Suggestion)

🔥 **Priority**: CRITICAL. 🚀 **Action**: Patch IMMEDIATELY. 📅 **Published**: 2025-09-25. ⏳ **Urgency**: High due to CVSS 9.8 (Critical).

Continue exploring

Vulnerability detail Full AI analysis (login) FlagForgeCTF CWE-384