CVE-2026-33750

Severity CVSS v4.0:

Pending analysis

Type:

CWE-400 Uncontrolled Resource Consumption ('Resource Exhaustion')

Publication date:

27/03/2026

Last modified:

22/04/2026

Description

The brace-expansion library generates arbitrary strings containing a common prefix and suffix. Prior to versions 5.0.5, 3.0.2, 2.0.3, and 1.1.13, a brace pattern with a zero step value (e.g., `{1..2..0}`) causes the sequence generation loop to run indefinitely, making the process hang for seconds and allocate heaps of memory. Versions 5.0.5, 3.0.2, 2.0.3, and 1.1.13 fix the issue. As a workaround, sanitize strings passed to `expand()` to ensure a step value of `0` is not used.

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 6.50 MEDIUM
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x

6.50

Severity 3.x

MEDIUM

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:juliangruber:brace-expansion::::::node.js::*		1.1.13 (excluding)
cpe:2.3:a:juliangruber:brace-expansion::::::node.js::*	2.0.0 (including)	2.0.3 (excluding)
cpe:2.3:a:juliangruber:brace-expansion::::::node.js::*	3.0.0 (including)	3.0.2 (excluding)
cpe:2.3:a:juliangruber:brace-expansion::::::node.js::*	5.0.0 (including)	5.0.5 (excluding)

To consult the complete list of CPE names with products and versions, see this page

CVE-2026-33750

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools