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CVE-2026-41680— Marked: OOM Denial of Service via Infinite Recursion in marked Tokenizer

Quick assessment

Affected
markedjs marked
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

marked是美国Christopher Jeffrey个人开发者的一款使用JavaScript编写的Markdown解析器和编译器。 marked 18.0.0版本至18.0.1版本存在资源管理错误漏洞，该漏洞源于解析特定3字节输入序列时触发无限递归循环，导致无限制内存分配，造成Node.js应用因内存耗尽崩溃。

AI Predicted 7.5 Difficulty: Trivial EPSS 0.34% · P28

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2026-41680

Vulnerability Information
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Vulnerability Title
Marked: OOM Denial of Service via Infinite Recursion in marked Tokenizer
Source: CVE Program / CVE List V5
Vulnerability 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)—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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: CVE Program / CVE List V5
Vulnerability Title
marked 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
marked是美国Christopher Jeffrey个人开发者的一款使用JavaScript编写的Markdown解析器和编译器。 marked 18.0.0版本至18.0.1版本存在资源管理错误漏洞，该漏洞源于解析特定3字节输入序列时触发无限递归循环，导致无限制内存分配，造成Node.js应用因内存耗尽崩溃。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
markedjs marked >= 18.0.0, < 18.0.2 -

II. Public POCs for CVE-2026-41680

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III. Intelligence Information for CVE-2026-41680

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Vendor Advisories for CVE-2026-41680 (1)

IV. Related Vulnerabilities

Same product: marked
Same vendor: markedjs
Same weakness: CWE-400