CVE-2025-9670 - CVE House
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Status published Medium CVE-2025-9670

mixmark-io turndown commonmark-rules.js redos

Vulnerability Description

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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • CrazzyHe (VulDB User)

Affected Vendor

Affected Software

turndown
Vulnerable Versions:
7.2.0, 7.2.1

Timeline

Official Publish: August 29th, 2025
Last Modified: August 29th, 2025
Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R

Weaknesses (CWE)