CVE-2025-68917 — AI Deep Analysis Summary

Q: Root Cause? (CWE/Flaw)

🔍 **Root Cause**: - **Flaw Point**: The `textarea` in the comment editing form does not properly filter input. - **Corresponding CWE**: CWE-79 (Cross-Site Scripting).

Q: Who is affected? (Versions/Components)

👥 **Affected Scope**: - **Version**: ONLYOFFICE Docs versions **prior to 9.2.1**. - **Component**: Comment editing feature (`textarea`).

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

📉 **Exploitation Difficulty**: **Low**! - ✅ No special privileges needed (regular logged-in user is sufficient). - ✅ No complex configuration required. - ❌ UI interaction not necessary (UI:N).

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

🧪 **Existing Exploit**: - **PoC**: No public code available (pocs: []). - **In-the-wild Exploitation**: Not mentioned → not found yet.

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

🛡️ **Official Fix**: - ✅ Fixed in version **9.2.1**. - 🔗 Reference: [CHANGELOG](https://github.com/ONLYOFFICE/DocumentServer/blob/master/CHANGELOG.md#921)

Q: What if no patch? (Workaround)

⏳ **Temporary Workaround Without Patch**: - 🚫 Restrict or disable public commenting. - 🔐 Enforce HTML escaping of input content (WAF/middleware layer). - 👀 Strengthen output rendering security checks.

Q: Is it urgent? (Priority Suggestion)

🔥 **Priority**: **High**! - CVSS 3.1: **5.4** (Medium), but affects multiple users & is easy to exploit. - 💡 Recommend immediate upgrade to ≥ 9.2.1 or implement mitigation measures.

Updated Apr 17, 2026 CVSS 6.4 · Medium

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)

🚨 **Vulnerability Essence**: The comment editing `textarea` in ONLYOFFICE Docs < 9.2.1 has a **Cross-Site Scripting (XSS)** issue.…

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Q2Root Cause? (CWE/Flaw)

🔍 **Root Cause**:  
- **Flaw Point**: The `textarea` in the comment editing form does not properly filter input.  
- **Corresponding CWE**: CWE-79 (Cross-Site Scripting).

Q3Who is affected? (Versions/Components)

👥 **Affected Scope**:  
- **Version**: ONLYOFFICE Docs versions **prior to 9.2.1**.  
- **Component**: Comment editing feature (`textarea`).

Q4What can hackers do? (Privileges/Data)

⚠️ **Attacker Capabilities**:  
- **Required Privilege**: **Regular user (PR:L)** can trigger it.  
- **Can Obtain**: Sensitive data of current user (e.g., Cookie, Token).…

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Q5Is exploitation threshold high? (Auth/Config)

📉 **Exploitation Difficulty**: **Low**!  
- ✅ No special privileges needed (regular logged-in user is sufficient).  
- ✅ No complex configuration required.  
- ❌ UI interaction not necessary (UI:N).

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

🧪 **Existing Exploit**:  
- **PoC**: No public code available (pocs: []).  
- **In-the-wild Exploitation**: Not mentioned → not found yet.

Q7How to self-check? (Features/Scanning)

🔎 **Self-Check Method**:  
- Check if version < 9.2.1? 🚨 High risk.  
- Test whether the comment section `textarea` filters tags like `<script>`.…

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Q8Is it fixed officially? (Patch/Mitigation)

🛡️ **Official Fix**:  
- ✅ Fixed in version **9.2.1**.  
- 🔗 Reference: [CHANGELOG](https://github.com/ONLYOFFICE/DocumentServer/blob/master/CHANGELOG.md#921)

Q9What if no patch? (Workaround)

⏳ **Temporary Workaround Without Patch**:  
- 🚫 Restrict or disable public commenting.  
- 🔐 Enforce HTML escaping of input content (WAF/middleware layer).  
- 👀 Strengthen output rendering security checks.

Q10Is it urgent? (Priority Suggestion)

🔥 **Priority**: **High**!  
- CVSS 3.1: **5.4** (Medium), but affects multiple users & is easy to exploit.  
- 💡 Recommend immediate upgrade to ≥ 9.2.1 or implement mitigation measures.

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Vulnerability detail Full AI analysis (login) ONLYOFFICE CWE-79