CVE-2026-13149

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Summary

CVECVE-2026-13149
StatePUBLISHED
Assignerseal
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-06-30 10:16:34 UTC
Updated2026-07-08 12:17:20 UTC
Descriptionbrace-expansion through 5.0.6 is vulnerable to denial of service. The expand() function exhibits exponential-time complexity in the number of consecutive non-expanding '{}' brace groups. An attacker who passes a crafted string to expand(), directly or transitively, can cause significant CPU consumption and event-loop blocking. The max option does not mitigate this, as it bounds the output size rather than the recursion work.

Risk And Classification

Primary CVSS: v4.0 7.7 HIGH from 22e2d327-25fe-45d7-9f0c-dcd23b7108df

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:N/AU:Y/R:U/V:D/RE:M/U:Amber

EPSS: 0.003610000 probability, percentile 0.281030000 (date 2026-07-08)

Problem Types: CWE-400 | CWE-407 | CWE-400 CWE-400 Uncontrolled Resource Consumption | CWE-407 CWE-407 Inefficient Algorithmic Complexity

VersionSourceTypeScoreSeverityVector
4.022e2d327-25fe-45d7-9f0c-dcd23b7108dfSecondary7.7HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/C...
4.0CNACVSS7.7HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/S...

CVSS v4.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
None
User Interaction
None
Confidentiality
None
Integrity
None
Availability
High
Sub Conf.
None
Sub Integrity
None
Sub Availability
None

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:N/AU:Y/R:U/V:D/RE:M/U:Amber

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Juliangruber Brace-expansion affected 5.0.6 semver Not specified

References

ReferenceSourceLinkTags
github.com/juliangruber/brace-expansion/commit/c7e33ec13ac1a684c11672084... 22e2d327-25fe-45d7-9f0c-dcd23b7108df github.com
www.npmjs.com/package/brace-expansion 22e2d327-25fe-45d7-9f0c-dcd23b7108df www.npmjs.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: bnbdr (en)

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