critical9.3

CVE-2025-11849

Mammoth is vulnerable to Directory Traversal

Impact

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.

Affected packages

Ecosystem	Package	Affected	Fixed in
npm	`mammoth`	>= 0.3.25, < 1.11.0	1.11.0
maven	`org.zwobble.mammoth:mammoth`	< 1.11.0	1.11.0
pip	`mammoth`	>= 0.3.25, < 1.11.0	1.11.0
nuget	`Mammoth`	< 1.11.0	1.11.0

Affected products

Product	Affected versions
Package Mammoth From 0.3.25 And	before 1.11.0
Package Mammoth	before 1.11.0
Package Org.Zwobble.Mammoth:Mammoth	before 1.11.0

Versions were read from the advisory text. No structured product data has been published for this record yet.

Weakness classification

CWE-22

Impact

Affected packages

Affected products

Weakness classification

References