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2 vulnerabilities found for mammoth.js by mwilliamson

CVE-2026-105219 (GCVE-0-2026-105219)
Vulnerability from cvelistv5
Published
2026-10-04 17:09
Modified
2026-10-05 14:55
Severity ?
8.7 (High) - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-1333 - Inefficient Regular Expression Complexity
Summary
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.
References
Impacted products
Vendor Product Version
mwilliamson mammoth.js Version: 1.3.0   ≤
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CVE-2026-97151 (GCVE-0-2026-97151)
Vulnerability from cvelistv5
Published
2026-09-24 03:08
Modified
2026-09-24 13:02
Severity ?
8.4 (High) - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:H/SC:N/SI:N/SA:N
CWE
  • CWE-1321 - Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
Summary
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.
References
Impacted products
Vendor Product Version
mwilliamson mammoth.js Version: 0   ≤
Create a notification for this product.
Show details on NVD website

To clipboard 

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