CVE-2026-33750

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.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/juliangruber/brace-expansion/blob/daa71bcb4a30a2df9bcb7f7b8daaf2ab30e5794a/src/index.ts#L107-L113	Patch
https://github.com/juliangruber/brace-expansion/blob/daa71bcb4a30a2df9bcb7f7b8daaf2ab30e5794a/src/index.ts#L184	Patch
https://github.com/juliangruber/brace-expansion/commit/311ac0d54994158c0a384e286a7d6cbb17ee8ed5	Patch
https://github.com/juliangruber/brace-expansion/commit/7fd684f89fdde3549563d0a6522226a9189472a2	Patch
https://github.com/juliangruber/brace-expansion/commit/b9cacd9e55e7a1fa588fe4b7bb1159d52f1d902a	Patch
https://github.com/juliangruber/brace-expansion/issues/98	Issue Tracking
https://github.com/juliangruber/brace-expansion/pull/95	Issue Tracking Patch
https://github.com/juliangruber/brace-expansion/pull/96	Issue Tracking Patch
https://github.com/juliangruber/brace-expansion/pull/97	Issue Tracking Patch
https://github.com/juliangruber/brace-expansion/security/advisories/GHSA-f886-m6hf-6m8v	Mitigation Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:juliangruber:brace-expansion::::::node.js::*
	cpe:2.3:a:juliangruber:brace-expansion::::::node.js::*
	cpe:2.3:a:juliangruber:brace-expansion::::::node.js::*
	cpe:2.3:a:juliangruber:brace-expansion::::::node.js::*

History

No history.

Information

Published : 2026-03-27 15:16

Updated : 2026-06-17 10:38

NVD link : CVE-2026-33750

Mitre link : CVE-2026-33750

CVE.ORG link : CVE-2026-33750

JSON object : View

Products Affected

juliangruber

brace-expansion

CWE

CWE-400

Uncontrolled Resource Consumption

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