{"id":"UBUNTU-CVE-2026-25547","details":"@isaacs/brace-expansion is a hybrid CJS/ESM TypeScript fork of brace-expansion. Prior to version 5.0.1, @isaacs/brace-expansion is vulnerable to a denial of service (DoS) issue caused by unbounded brace range expansion. When an attacker provides a pattern containing repeated numeric brace ranges, the library attempts to eagerly generate every possible combination synchronously. Because the expansion grows exponentially, even a small input can consume excessive CPU and memory and may crash the Node.js process. This issue has been patched in version 5.0.1.","modified":"2026-02-12T07:00:02.135035Z","published":"2026-02-04T22:16:00Z","upstream":["CVE-2026-25547"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-25547"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-25547"},{"type":"REPORT","url":"https://github.com/isaacs/brace-expansion/security/advisories/GHSA-7h2j-956f-4vf2"}],"affected":[{"package":{"name":"node-brace-expansion","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/node-brace-expansion@1.1.8-1?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1.8-1"],"ecosystem_specific":{"binaries":[{"binary_name":"node-brace-expansion","binary_version":"1.1.8-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-25547.json"}},{"package":{"name":"node-brace-expansion","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/node-brace-expansion@1.1.11-1?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1.8-1","1.1.11-1"],"ecosystem_specific":{"binaries":[{"binary_name":"node-brace-expansion","binary_version":"1.1.11-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-25547.json"}},{"package":{"name":"node-brace-expansion","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/node-brace-expansion@2.0.1-1?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.0.0-1","2.0.1-1"],"ecosystem_specific":{"binaries":[{"binary_name":"node-brace-expansion","binary_version":"2.0.1-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-25547.json"}},{"package":{"name":"node-brace-expansion","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/node-brace-expansion@2.0.1+~1.1.0-1?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.0.1-2","2.0.1+~1.1.0-1"],"ecosystem_specific":{"binaries":[{"binary_name":"node-brace-expansion","binary_version":"2.0.1+~1.1.0-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-25547.json"}},{"package":{"name":"node-brace-expansion","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/node-brace-expansion@2.0.1+~1.1.0-2?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.0.1+~1.1.0-1","2.0.1+~1.1.0-2"],"ecosystem_specific":{"binaries":[{"binary_name":"node-brace-expansion","binary_version":"2.0.1+~1.1.0-2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-25547.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H"},{"type":"Ubuntu","score":"medium"}]}