brace-expansion: DoS via unbounded intermediate arrays, bypassing the CVE-2026-14257 mitigation

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-69152
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-03 17:16:45 UTC
Updated2026-08-03 21:16:41 UTC
DescriptionThe brace-expansion library generates arbitrary strings containing a common prefix and suffix. Prior to 1.1.18, 2.1.4, 3.0.6, and 5.0.9, expand() does not apply maxLength while constructing comma-alternative intermediate arrays or padded sequences, allowing attacker-controlled input to exhaust memory or block the event loop. The fix for CVE-2026-14257 is bypassed by the vulnerability. This issue is fixed in versions 1.1.18, 2.1.4, 3.0.6, and 5.0.9.

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

Problem Types: CWE-400 | CWE-770 | CWE-400 CWE-400: Uncontrolled Resource Consumption | CWE-770 CWE-770: Allocation of Resources Without Limits or Throttling

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 < 1.1.18 Not specified
CNA Juliangruber Brace-expansion affected >= 2.0.0, < 2.1.4 Not specified
CNA Juliangruber Brace-expansion affected >= 3.0.0, < 3.0.6 Not specified
CNA Juliangruber Brace-expansion affected >= 4.0.0, < 5.0.9 Not specified

References

ReferenceSourceLinkTags
github.com/juliangruber/brace-expansion/commit/cb4b9e47cc2ec777c14b2b449... [email protected] github.com
github.com/juliangruber/brace-expansion/commit/688a99eeaab02627c2b89ba8b... [email protected] github.com
github.com/juliangruber/brace-expansion/commit/139d015104e71433ad52a41d1... [email protected] github.com
github.com/juliangruber/brace-expansion/commit/1e30c930238d7162802d88a94... [email protected] github.com
github.com/juliangruber/brace-expansion/security/advisories/GHSA-rgw5-rv... 134c704f-9b21-4f2e-91b3-4a467353bcc0 github.com
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