CVE-2018-25110

High

Description

Marked prior to version 0.3.17 is vulnerable to a Regular Expression Denial of Service (ReDoS) attack due to catastrophic backtracking in several regular expressions used for parsing HTML tags and markdown links. An attacker can exploit this vulnerability by providing specially crafted markdown input, such as deeply nested or repetitively structured brackets or tag attributes, which cause the parser to hang and lead to a Denial of Service.

SeverityHigh

CVSS7.5

Exploit probability—

Product

Marked

PublishedMay 23, 2025

First seenMay 23, 2025

Weakness typeCWE-1333CWE-1333

How to fix

Update

marked_project marked0.3.17 or later
marked0.3.17 or later

Patches

github.com/markedjs/marked/commit/20bfc106013ed45713a21672ad4a34df94dcd485

Affected products

Product	Affected versions	Fixed in
marked_project marked	v < 0.3.17	0.3.17
markednpm	v < 0.3.17	0.3.17

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