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From: Salvatore Bonaccorso <carnil@debian.org>
To: Debian Bug Tracking System <submit@bugs.debian.org>
Subject: node-brace-expansion: CVE-2026-25547
Message-ID: <177041276053.1547635.1521984687710179409.reportbug@eldamar.lan>
X-Mailer: reportbug 13.2.0
Date: Fri, 06 Feb 2026 22:19:20 +0100
Delivered-To: submit@bugs.debian.org

Source: node-brace-expansion
Version: 2.0.1+~1.1.0-2
Severity: important
Tags: security upstream
X-Debbugs-Cc: carnil@debian.org, Debian Security Team <team@security.debian.org>

Hi,

The following vulnerability was published for node-brace-expansion.

CVE-2026-25547[0]:
| @isaacs/brace-expansion is a hybrid CJS/ESM TypeScript fork of
| brace-expansion. Prior to version 5.0.1, @isaacs/brace-expansion is
| vulnerable to a denial of service (DoS) issue caused by unbounded
| brace range expansion. When an attacker provides a pattern
| containing repeated numeric brace ranges, the library attempts to
| eagerly generate every possible combination synchronously. Because
| the expansion grows exponentially, even a small input can consume
| excessive CPU and memory and may crash the Node.js process. This
| issue has been patched in version 5.0.1.

Note the issue was announced/fixed in the isaacs/brace-expansion fork,
but is present in the original forked code as well, AFAICS.


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-2026-25547
    https://www.cve.org/CVERecord?id=CVE-2026-25547
[1] https://github.com/isaacs/brace-expansion/security/advisories/GHSA-7h2j-956f-4vf2
[2] https://github.com/isaacs/brace-expansion/commit/59d12f1e23accdec8c395ca824cf942c1fdea860

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore
]