Denial of service in GitHub cmark-gfm

Published: 2022-09-20
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2022-39209
Exploitation vector Network
Public exploit N/A
Vulnerable software
Universal components / Libraries / Software for developers

Vendor GitHub

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Resource exhaustion

EUVDB-ID: #VU67493

Risk: Medium


CVE-ID: CVE-2022-39209

CWE-ID: CWE-400 - Uncontrolled Resource Consumption ('Resource Exhaustion')

Exploit availability: No


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

The vulnerability exists due to a polynomial time complexity issue in the autolink extension. A remote user can trigger resource exhaustion and perform a denial of service (DoS) attack.


Install updates from vendor's website.

Vulnerable software versions

cmark-gfm: 0.29.0.gfm.0 - 0.29.0.gfm.5

CPE2.3 External links

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?