CVE Catalog

CVE-2025-9670

MediumCVSS 5.3
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.48%

40th percentile - higher than 40% of all known CVEs

Summary

A security flaw was found in mixmark-io turndown up to 7.2.1 in src/commonmark-rules.js, caused by inefficient regular expression complexity. The attack can be initiated remotely and a public exploit exists.

Risk Assessment

A publicly available exploit could enable remote resource exhaustion (ReDoS), leading to denial of service.

Recommendation

Update turndown to a version later than 7.2.1 or apply a fix that limits regular expression complexity.

Related vulnerabilities

Original NVD description (English source)

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 data from NVD (NIST) · CISA KEV · EPSS