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.
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Affected Vendors & Products
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History
Mon, 05 Oct 2026 15:30:00 +0000
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ssvc
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Sun, 04 Oct 2026 18:45:00 +0000
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Mwilliamson
Mwilliamson mammoth.js |
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| Vendors & Products |
Mwilliamson
Mwilliamson mammoth.js |
Sun, 04 Oct 2026 17:30:00 +0000
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| Description | 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. | |
| Title | Mammoth.js 1.3.0 before 1.12.3 ReDoS via Style Map Tokeniser | |
| Weaknesses | CWE-1333 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: VulnCheck
Published: 2026-10-04T17:09:54.186Z
Updated: 2026-10-05T14:55:01.763Z
Reserved: 2026-10-04T13:04:00.479Z
Link: CVE-2026-105219
Updated: 2026-10-05T14:50:31.880Z
Status : Awaiting Analysis
Published: 2026-10-04T18:16:34.777
Modified: 2026-10-06T16:00:36.547
Link: CVE-2026-105219
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