CVE-2025-11849 — AI Deep Analysis Summary

Q: Root Cause? (CWE/Flaw)

🛡️ **Root Cause**: **Missing Input Validation**. Specifically, the tool fails to verify file paths or types when processing documents. 🔍 **CWE**: CWE-22 (Improper Limitation of a Pathname to a Restricted Directory).

Q: Who is affected? (Versions/Components)

📦 **Affected Versions**: • `mammoth` **0.3.25** • All versions **before 1.11.0** 👤 **Developer**: Michael Williamson (Personal Project).

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

⚠️ **Exploitation Threshold**: **Low**. • **Network**: Remote (AV:N). • **Auth**: None required (PR:N). • **User Interaction**: Required (UI:R) - Victim must open/submit a malicious docx.

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

📢 **Public Exploit**: **No**. The `pocs` field is empty. 🔗 **References**: Proof-of-concept links exist on GitHub/Snyk, but no automated wild exploitation tools are confirmed in the data.

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

🔍 **Self-Check**: 1. Scan your dependency tree for `mammoth` version < 1.11.0. 2. Check if your app processes untrusted `.docx` files using this library. 3. Look for file path manipulation in logs.

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

🩹 **Fix Status**: **Yes**. • **Patch**: Upgrade to version **1.11.0** or later. • **Commit**: Fix confirmed in `c54aaeb` on GitHub.

Q: Is it urgent? (Priority Suggestion)

🔥 **Urgency**: **HIGH**. • CVSS Score indicates High Impact. • Easy to exploit (Low Complexity). • **Action**: Patch immediately if processing user-uploaded Word documents.

Updated May 06, 2026 CVSS 9.3 · 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**: Mammoth (Word-to-HTML tool) has a critical flaw in handling `.docx` files. <br>💥 **Consequences**: Attackers can trigger **Directory Traversal** (CWE-22) or cause **Resource Exhaustion** (DoS).…

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Q2Root Cause? (CWE/Flaw)

🛡️ **Root Cause**: **Missing Input Validation**. Specifically, the tool fails to verify file paths or types when processing documents. <br>🔍 **CWE**: CWE-22 (Improper Limitation of a Pathname to a Restricted Directory).

Q3Who is affected? (Versions/Components)

📦 **Affected Versions**: <br>• `mammoth` **0.3.25** <br>• All versions **before 1.11.0** <br>👤 **Developer**: Michael Williamson (Personal Project).

Q4What can hackers do? (Privileges/Data)

🕵️ **Attacker Capabilities**: <br>• **Read**: Access sensitive files outside the intended directory via traversal. <br>• **Disrupt**: Crash the service via resource overconsumption.…

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Q5Is exploitation threshold high? (Auth/Config)

⚠️ **Exploitation Threshold**: **Low**. <br>• **Network**: Remote (AV:N). <br>• **Auth**: None required (PR:N). <br>• **User Interaction**: Required (UI:R) - Victim must open/submit a malicious docx.

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

📢 **Public Exploit**: **No**. The `pocs` field is empty. <br>🔗 **References**: Proof-of-concept links exist on GitHub/Snyk, but no automated wild exploitation tools are confirmed in the data.

Q7How to self-check? (Features/Scanning)

🔍 **Self-Check**: <br>1. Scan your dependency tree for `mammoth` version < 1.11.0. <br>2. Check if your app processes untrusted `.docx` files using this library. <br>3. Look for file path manipulation in logs.

Q8Is it fixed officially? (Patch/Mitigation)

🩹 **Fix Status**: **Yes**. <br>• **Patch**: Upgrade to version **1.11.0** or later. <br>• **Commit**: Fix confirmed in `c54aaeb` on GitHub.

Q9What if no patch? (Workaround)

🚧 **No Patch Workaround**: <br>• **Sanitize Inputs**: Validate all file paths and extensions strictly before passing to Mammoth.…

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Q10Is it urgent? (Priority Suggestion)

🔥 **Urgency**: **HIGH**. <br>• CVSS Score indicates High Impact. <br>• Easy to exploit (Low Complexity). <br>• **Action**: Patch immediately if processing user-uploaded Word documents.

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Vulnerability detail Full AI analysis (login) n/a CWE-22