brace-expansion: DoS via uncontrolled recursion in parseCommaParts causing stack exhaustion

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-102276
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-28 21:17:16 UTC
Updated2026-09-30 19:57:08 UTC
DescriptionThe brace-expansion library generates arbitrary strings containing a common prefix and suffix. Prior to 1.1.19, 2.1.5, 3.0.7, and 5.0.10, crafted brace patterns can exhaust the native stack in parseCommaParts because parseCommaParts recursively processes the remainder once per brace group and uses push.apply to pass every element of a very large comma-part array as a function argument. Patterns containing many comma-separated brace groups trigger the recursive path, while the large array triggers the argument-array path without deep recursion. These paths cause recursive and argument-array native stack exhaustion before max or maxLength can limit output, potentially terminating the Node.js process in a process-terminating denial of service. This issue is fixed in versions 1.1.19, 2.1.5, 3.0.7, and 5.0.10.

Risk And Classification

Primary CVSS: v3.1 7.5 HIGH from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS: 0.003500000 probability, percentile 0.261550000 (date 2026-09-29)

Problem Types: CWE-400 | CWE-674 | CWE-400 CWE-400: Uncontrolled Resource Consumption | CWE-674 CWE-674: Uncontrolled Recursion

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.1CNADECLARED7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Juliangruber Brace-expansion affected >= 4.0.0, < 5.0.10 Not specified
CNA Juliangruber Brace-expansion affected >= 3.0.0, < 3.0.7 Not specified
CNA Juliangruber Brace-expansion affected >= 2.0.0, < 2.1.5 Not specified
CNA Juliangruber Brace-expansion affected < 1.1.19 Not specified

References

ReferenceSourceLinkTags
github.com/juliangruber/brace-expansion/commit/5171e681c0922b7ae8bfaf9a3... [email protected] github.com
github.com/juliangruber/brace-expansion/security/advisories/GHSA-6j4f-fj... [email protected] github.com
github.com/juliangruber/brace-expansion/commit/6735c94873ca570bcdd6a0690... [email protected] github.com
github.com/juliangruber/brace-expansion/commit/316359e6019c39b3254c8ba8e... [email protected] github.com
github.com/juliangruber/brace-expansion/commit/0bcbfc0a5928c3073d48f4299... [email protected] github.com
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