PT-2026-104648 · Mwilliamson · Mammoth.Js

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CVE-2026-105219

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Published

2026-10-04

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Updated

2026-10-04

CVSS v3.1

7.5

High

VectorAV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Mammoth.js 1.3.0 before 1.12.3 contains a regular expression denial of service vulnerability in the style map tokeniser in lib/styles/parser/tokeniser.js due to overlapping regex alternatives. Attackers can supply a crafted .docx with an unterminated quoted string of repeated backslash escapes in mammoth/style-map to block the Node.js event loop.

Fix

DoS

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Weakness Enumeration

Related Identifiers

CVE-2026-105219

Affected Products

Mammoth.Js