Resource exhaustion in Github Cmark-Gfm

CVE-2023-22483

cmark-gfm is GitHub's fork of cmark, a CommonMark parsing and rendering library and program in C. Versions prior to 0.29.0.gfm.7 are subject to several polynomial time complexity issues in cmark-gfm that may lead to unbounded resource exhaustion and subsequent denial of service. Various commands, when piped to cmark-gfm with large values, cause the running time to increase quadratically. These vulnerabilities have been patched in version 0.29.0.gfm.7.

Vulnerability class: DoS (Denial of Service)

EPSS: 0.011 (61.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 3.5 (Low). Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2023-22483?
CVE-2023-22483 is a low-severity vulnerability in Github Cmark-Gfm, classified under Uncontrolled Resource Consumption. CVSS score: 3.5/10. Published 2023-01-23.
How severe is CVE-2023-22483?
Low severity. CVSS v3 base score is 3.5 out of 10.