{"id":"UBUNTU-CVE-2026-33750","details":"The brace-expansion library generates arbitrary strings containing a common prefix and suffix. Prior to versions 5.0.5, 3.0.2, 2.0.3, and 1.1.13, a brace pattern with a zero step value (e.g., `{1..2..0}`) causes the sequence generation loop to run indefinitely, making the process hang for seconds and allocate heaps of memory. Versions 5.0.5, 3.0.2, 2.0.3, and 1.1.13 fix the issue. As a workaround, sanitize strings passed to `expand()` to ensure a step value of `0` is not used.","modified":"2026-04-27T20:08:09.475409Z","published":"2026-03-27T15:16:00Z","upstream":["CVE-2026-33750"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-33750"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-33750"},{"type":"REPORT","url":"https://github.com/juliangruber/brace-expansion/security/advisories/GHSA-f886-m6hf-6m8v"},{"type":"REPORT","url":"https://github.com/juliangruber/brace-expansion/blob/daa71bcb4a30a2df9bcb7f7b8daaf2ab30e5794a/src/index.ts#L107-L113"},{"type":"REPORT","url":"https://github.com/juliangruber/brace-expansion/blob/daa71bcb4a30a2df9bcb7f7b8daaf2ab30e5794a/src/index.ts#L184"},{"type":"REPORT","url":"https://github.com/juliangruber/brace-expansion/commit/311ac0d54994158c0a384e286a7d6cbb17ee8ed5"},{"type":"REPORT","url":"https://github.com/juliangruber/brace-expansion/commit/7fd684f89fdde3549563d0a6522226a9189472a2"},{"type":"REPORT","url":"https://github.com/juliangruber/brace-expansion/commit/b9cacd9e55e7a1fa588fe4b7bb1159d52f1d902a"},{"type":"REPORT","url":"https://github.com/juliangruber/brace-expansion/issues/98"},{"type":"REPORT","url":"https://github.com/juliangruber/brace-expansion/pull/95"},{"type":"REPORT","url":"https://github.com/juliangruber/brace-expansion/pull/96"},{"type":"REPORT","url":"https://github.com/juliangruber/brace-expansion/pull/97"}],"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_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-2026-33750.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_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-2026-33750.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_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-2026-33750.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_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-2026-33750.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_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-2026-33750.json"}},{"package":{"name":"node-brace-expansion","ecosystem":"Ubuntu:26.04","purl":"pkg:deb/ubuntu/node-brace-expansion@2.0.1+~1.1.0-2?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["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-2026-33750.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}