CVE-2026-97151

Published: Set 24, 2026 Last Modified: Set 24, 2026
ExploitDB:
Other exploit source:
Google Dorks:
HIGH 8,4
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: none
Confidentiality: N/A
Integrity: N/A
Availability: N/A

Description

AI Translation Available

mammoth (aka mammoth.js) before 1.12.2 is vulnerable to prototype pollution when reading the styles defined in a document. Converting a crafted .docx file allows an attacker to add arbitrary properties to Object.prototype. In 1.11.0 through 1.12.1, applications that convert further documents in the same process and return the converted HTML can also disclose the contents of local server files (to the party supplying the documents) by setting externalFileAccess to true.

1321

Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

Incomplete
Common Consequences
Security Scopes Affected:
Confidentiality Integrity Availability
Potential Impacts:
Read Application Data Modify Application Data Dos: Crash, Exit, Or Restart
Applicable Platforms
Languages: JavaScript
View CWE Details
https://github.com/mwilliamson/mammoth.js/commit/2888fa158d67c1419199f152326e12…
https://github.com/mwilliamson/mammoth.js/commit/31f0c370be4b95ac4fa285fea3be97…
https://raw.githubusercontent.com/mwilliamson/mammoth.js/master/NEWS
https://www.npmjs.com/package/mammoth