Resource exhaustion in Mixmark-Io Turndown
CVE-2025-9670
A security flaw has been discovered in mixmark-io turndown up to 7.2.1. This affects an unknown function of the file src/commonmark-rules.js. Performing manipulation results in inefficient regular expression complexity. It is possible to initiate the attack remotely. The exploit has been released to the public and may be exploited.
Vulnerability class: DoS (Denial of Service)
EPSS: 0.005 (37.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.
Affected products
- Mixmark-io Turndown — versions 7.2.0, 7.2.1
Weakness classification (CWE)
References
- cna@vuldb.com (vdb-entry)
- cna@vuldb.com (signature, permissions-required)
- cna@vuldb.com (third-party-advisory)
- cna@vuldb.com (issue-tracking)
- cna@vuldb.com (issue-tracking, exploit)
Frequently asked questions
- What is CVE-2025-9670?
- CVE-2025-9670 is a medium-severity vulnerability in Mixmark-Io Turndown, classified under Uncontrolled Resource Consumption. CVSS score: 5.3/10. Published 2025-08-29.
- How severe is CVE-2025-9670?
- Medium severity. CVSS v3 base score is 5.3 out of 10.