[Pkg-javascript-devel] Bug#1118283: node-turndown: CVE-2025-9670

[Salvatore Bonaccorso]

Source: node-turndown
Version: 7.1.1-3
Severity: important
Tags: security upstream
Forwarded: https://github.com/mixmark-io/turndown/issues/501
X-Debbugs-Cc: carnil at debian.org, Debian Security Team <team at security.debian.org>

Hi,

The following vulnerability was published for node-turndown.

CVE-2025-9670[0]:
| 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.

There is a proposed fix in the corresponding pull request at [2], but
it has not yet been merged.

If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2025-9670
    https://www.cve.org/CVERecord?id=CVE-2025-9670
[1] https://github.com/mixmark-io/turndown/issues/501
[2] https://github.com/mixmark-io/turndown/pull/504

Regards,
Salvtore