CVE-2025-9670 MEDIUM

CVE-2025-9670: mixmark-io turndown commonmark-rules.js redos

Vendor Mixmark-Io
Product turndown
Weakness CWE-1333
Published August 29, 2025
Last update August 29, 2025
View on NVD All CVEs

CVSS base score

6.9/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

August 29, 2025 CVE published
August 29, 2025 Record updated