UBUNTU-CVE-2026-14257

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Source
https://ubuntu.com/security/CVE-2026-14257
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-14257.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-14257
Upstream
Published
2026-07-23T14:17:00Z
Modified
2026-07-29T07:53:21Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

brace-expansion through 5.0.7 is vulnerable to denial of service via memory exhaustion. The expand() function limits the number of results with a max option (default 100,000) but does not bound the length of each result string. By chaining multiple brace groups, an attacker keeps the result count under the limit while making each result progressively longer, so total memory scales with both count and string length until the process hits a fatal, uncatchable out-of-memory error. About 7.5 KB of input ('{a,b}'.repeat(1500)) crashes a default Node.js process. Any application that passes attacker-influenced strings to brace-expansion.expand() - directly or transitively via minimatch / glob brace patterns - can be crashed by a small request. Fixed in 5.0.8 by adding a maxLength option (default 4,000,000) that bounds accumulated output and intermediate arrays.

References

Affected packages

Ubuntu:18.04:LTS / node-brace-expansion

Package

Name
node-brace-expansion
Purl
pkg:deb/ubuntu/node-brace-expansion?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.1.8-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1.1.8-1",
            "binary_name": "node-brace-expansion"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-14257.json"

Ubuntu:20.04:LTS / node-brace-expansion

Package

Name
node-brace-expansion
Purl
pkg:deb/ubuntu/node-brace-expansion?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.1.8-1
1.1.11-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1.1.11-1",
            "binary_name": "node-brace-expansion"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-14257.json"

Ubuntu:22.04:LTS / node-brace-expansion

Package

Name
node-brace-expansion
Purl
pkg:deb/ubuntu/node-brace-expansion?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2.*
2.0.0-1
2.0.1-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "2.0.1-1",
            "binary_name": "node-brace-expansion"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-14257.json"

Ubuntu:24.04:LTS / node-brace-expansion

Package

Name
node-brace-expansion
Purl
pkg:deb/ubuntu/node-brace-expansion?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2.*
2.0.1-2
2.0.1+~1.1.0-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "2.0.1+~1.1.0-1",
            "binary_name": "node-brace-expansion"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-14257.json"

Ubuntu:26.04:LTS / node-brace-expansion

Package

Name
node-brace-expansion
Purl
pkg:deb/ubuntu/node-brace-expansion?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2.*
2.0.1+~1.1.0-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "2.0.1+~1.1.0-2",
            "binary_name": "node-brace-expansion"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-14257.json"