🛡️ CVE-2025-11849
🔴 CVSS 9.3 — Critical ✅ No Known Exploit CWE-22 NVD
9.3
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Versions of the package mammoth from 0.3.25 and before 1.11.0; versions of the package mammoth from 0.3.25 and before 1.11.0; versions of the package mammoth before 1.11.0; versions of the package org.zwobble.mammoth:mammoth before 1.11.0 are vulnerable to Directory Traversal due to the lack of path or file type validation when processing a docx file containing an image with an external link (r:link attribute instead of embedded r:embed). The library resolves the URI to a file path and after reading, the content is encoded as base64 and included in the HTML output as a data URI. An attacker can read arbitrary files on the system where the conversion is performed or cause an excessive resources consumption by crafting a docx file that links to special device files such as /dev/random or /dev/zero.

Details

Severity Critical
CVSS Score 9.3
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:H
CWE CWE-22
Public Exploit ✅ No
Source NVD
Published 2025-10-17
Updated 2026-06-15
Modified 2025-10-17
Fix URL N/A

Affected Packages

Software From version Fixed in
mammoth — 1.11.0
org.zwobble.mammoth:mammoth — 1.11.0
unknown — —

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