Medium 5.3Published Aug 29, 2025

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

Updated under an hour ago (Oct 26, 2026, 5:40 PM ET)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for mixmark-io turndown

Exploited in the last 30 days

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.

CVSS: 5.3 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R
Weakness (CWE): CWE-1333, CWE-400
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulDB
NVD analysis: Deferred
Record last updated: Aug 29, 2025
First seen by InfoSec Signals: Oct 18, 2026

Affected products

Affected products

mixmark-io turndown mixmark_io:turndown (from the name)	7.2.0; 7.2.1	CNA record

References

References

https://vuldb.com/?id.321880	vdb-entry
https://vuldb.com/?ctiid.321880	signature, permissions-required
https://vuldb.com/?submit.637911	third-party-advisory
https://github.com/mixmark-io/turndown/issues/501	issue-tracking
https://github.com/mixmark-io/turndown/issues/501#issue-3336342088	exploit, issue-tracking

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.