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01 Record

CVE-2026-102277

brace-expansion: Quadratic-time expansion of the `{a},b}` rewrite causes CPU denial of service

MediumPUBLISHEDCNA: GitHub_M
CNA base score5.3 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
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02 Description

brace-expansion: Quadratic-time expansion of the `{a},b}` rewrite causes CPU denial of service

03 Exploitation and scoring

Exploitation
Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision
Not assessed by CISA
EPSS probability
Not scored by EPSS
EPSS percentile
Not scored by EPSS
NVD base score
5.3 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
NVD analysis status
Received. NVD last modified this record on 2026-09-28.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2026-09-28 20:54Z1 HR AGO
Last updated
2026-09-28 20:54Z1 HR AGO
Reserved
2026-09-28
Assigning CNA
GitHub_M
Record state
PUBLISHED
Severity
Medium (CVSS 5.3)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Weaknesses
  • CWE-400Uncontrolled Resource ConsumptionClass
  • CWE-407Inefficient Algorithmic ComplexityClass
Data version
5.2
Document digest
549268de1f5f42ee23c239c1d4b62ee158b6f291284caab242e01d77331db9a3

05 Affected products

VendorProductVersionsPlatforms
juliangruberbrace-expansion>= 4.0.0, < 5.0.12, >= 3.0.0, < 3.0.9, >= 2.0.0, < 2.1.7, < 1.1.21—

06 References