CVE-2026-41680

7.5 HIGH
Published: April 24, 2026 Modified: April 28, 2026
View on NVD

Description

Marked is a markdown parser and compiler. From 18.0.0 to 18.0.1, a critical Denial of Service (DoS) vulnerability exists in marked. By providing a specific 3-byte input sequence a tab, a vertical tab, and a newline (\x09\x0b\n)β€”an unauthenticated attacker can trigger an infinite recursion loop during parsing. This leads to unbounded memory allocation, causing the host Node.js application to crash via Memory Exhaustion (OOM). This vulnerability is fixed in 18.0.2.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://github.com/markedjs/marked/security/advisories/GHSA-6v9c-7cg6-27q7
Source: security-advisories@github.com
Exploit Vendor Advisory
https://github.com/markedjs/marked/security/advisories/GHSA-6v9c-7cg6-27q7
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Exploit Vendor Advisory

2 reference(s) from NVD

Quick Stats

CVSS v3 Score
7.5 / 10.0
EPSS (Exploit Probability)
0.1%
25th percentile
Exploitation Status
Not in CISA KEV

Affected Vendors

marked_project