9.3
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CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:H/E:P
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.
Basic Information
ID
CVE-2025-11849
Source
snyk
Published
Oct 17, 2025 at 05:00
Affected Product
Vendor
n/a
Product
mammoth
Version
0.3.25
Affected Versions
n/a mammoth 0.3.25
n/a mammoth 0.3.25
n/a Mammoth 0
n/a org.zwobble.mammoth:mammoth 0
n/a mammoth 0.3.25
n/a Mammoth 0
n/a org.zwobble.mammoth:mammoth 0
References
- security.snyk.io /vuln/SNYK-JS-MAMMOTH-13554470
- security.snyk.io /vuln/SNYK-PYTHON-MAMMOTH-13561967
- security.snyk.io /vuln/SNYK-DOTNET-MAMMOTH-13561968
- security.snyk.io /vuln/SNYK-JAVA-ORGZWOBBLEMAMMOTH-13561969
- gist.github.com /AudunWA/4d690d9ae5efdafe7cf71d9c2ee90a10
- github.com /mwilliamson/mammoth.js/commit/c54aaeb43a7941317c1f3c119ffa92090f988820