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CVE-2026-97151

mammoth.js · Vulnerability

CVSS 4.0 8.4 HIGHCheck source for fixed versionsKEV status unknown
Original advisory

cve-program · CVE-2026-97151

Published

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.

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Affected versions, risk and source history

Related advisories and sources

Publishers link these advisories through the identifiers shown below. A shared identifier or date alone does not tell you whether your software is affected or whether the advisories describe the same cause.

CVE-2026-97151 · CVE overview and exploitation status

cve-program · CVE-2026-97151

Related changes

Linked by CVE identifier

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ChangeIntel

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Sources read 12 Nov 14:22 UTC · 274 of 275 readable · 272 fully read · documentation 469/469 current

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