Main Vulnerability Database Vulnerabilities #VU126877

Uncontrolled Recursion in marked - CVE-2026-41680

Published: April 23, 2026

Vulnerability identifier: #VU126877

CSH Severity: Medium

CVSS v4: 8.7 [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]

CVE-ID: CVE-2026-41680

CWE-ID: CWE-674

Exploitation vector: Remote access

Exploit availability: Public exploit is available

Vulnerability details

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to infinite recursion in the block tokenizer. A remote attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.

Affected software

marked
IBM Maximo Scheduler Optimization
Data Product Hub
IBM Decision Optimization for Cloud Pak for Data

How to mitigate CVE-2026-41680

Install updates from vendor's website.

marked - update to 18.0.2
IBM Maximo Scheduler Optimization - addressed in versions 9.0.24, 9.1.13
IBM Decision Optimization for Cloud Pak for Data - update to 5.3.1 patch 6
Data Product Hub - addressed in versions 5.3.1 Patch 7, 5.4.0

Links to Public Exploits and PoC-codes

Exploit #12619 - OOM Denial of Service via Infinite Recursion in marked@18.0.0 Tokenizer (April 23, 2026)

External References

https://github.com/markedjs/marked/security/advisories/GHSA-6v9c-7cg6-27q7