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CVE-2026-34565 β€” AI Deep Analysis Summary

CVSS 9.1 Β· Critical

Q1What is this vulnerability? (Essence + Consequences)

🚨 **Essence**: Stored DOM-based XSS in CI4MS. πŸ“‰ **Consequences**: Malicious scripts execute in victim browsers via navigation menus. Leads to session hijacking, data theft, or defacement.

Q2Root Cause? (CWE/Flaw)

πŸ›‘οΈ **Root Cause**: CWE-79 (XSS). πŸ› **Flaw**: User input added to navigation menus is **not sanitized**. Untrusted data is rendered directly into the DOM without escaping.

Q3Who is affected? (Versions/Components)

πŸ“¦ **Product**: CI4MS (Blog Management Tool). 🏷️ **Vendor**: ci4-cms-erp. πŸ“‰ **Affected**: Versions **< 0.31.0.0**. βœ… **Fixed**: v0.31.0.0+.

Q4What can hackers do? (Privileges/Data)

πŸ’» **Attacker Actions**: Execute arbitrary JavaScript. πŸ•΅οΈ **Impact**: Steal cookies/sessions, redirect users, or phish credentials. πŸ“Š **Data Risk**: High confidentiality impact (C:H) due to stored nature.

Q5Is exploitation threshold high? (Auth/Config)

πŸ” **Auth Required**: Yes (PR:L). 🌐 **Network**: Remote (AV:N). 🎯 **UI Interaction**: None required (UI:N). ⚠️ **Threshold**: Low for authenticated users. Easy to inject via admin menu features.

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

🚫 **Public Exploit**: No PoC provided in data. 🌍 **Wild Exploit**: Unconfirmed. However, the flaw is logical and likely easy to exploit manually if authenticated.

Q7How to self-check? (Features/Scanning)

πŸ” **Check**: Look for CI4MS versions < 0.31.0.0. πŸ“ **Scan**: Test 'Menu Management' input fields for script injection. Check if `<script>` tags are stored and executed in navigation.

Q8Is it fixed officially? (Patch/Mitigation)

βœ… **Fixed**: Yes. πŸ“₯ **Patch**: Upgrade to **CI4MS 0.31.0.0** or later. πŸ”— **Ref**: [GitHub Release](https://github.com/ci4-cms-erp/ci4ms/releases/tag/0.31.0.0).

Q9What if no patch? (Workaround)

πŸ›‘οΈ **Workaround**: If unpatched, **disable menu management** features. 🚫 **Input Validation**: Manually sanitize all inputs before adding to navigation. πŸ‘οΈ **Monitor**: Watch for unusual script tags in menu items.

Q10Is it urgent? (Priority Suggestion)

πŸ”₯ **Priority**: HIGH. πŸ“… **Published**: 2026-04-01. ⚑ **Reason**: Remote, Low Auth, Stored XSS. Immediate patching recommended to prevent session hijacking.