{"id":"DEBIAN-CVE-2026-102277","details":"The brace-expansion library generates arbitrary strings containing a common prefix and suffix. Prior to 1.1.21, 2.1.7, 3.0.9, and 5.0.12, the expand function handles untrusted {a},b}-shaped patterns with many trailing closing braces by restarting its scan once for each trailing closing brace. The successive full-input rescans with linear working-string growth cause quadratic CPU time and memory pressure that can block the Node.js event loop. The process eventually recovers, making the impact a recoverable CPU denial of service. This issue is fixed in versions 1.1.21, 2.1.7, 3.0.9, and 5.0.12.","modified":"2026-10-01T00:47:29.959265095Z","published":"2026-09-28T21:17:16.300Z","upstream":["CVE-2026-102277"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-102277"}],"affected":[{"package":{"name":"node-brace-expansion","ecosystem":"Debian:12","purl":"pkg:deb/debian/node-brace-expansion?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.0.1+~1.1.0-1","2.0.1+~1.1.0-2","2.0.1-2","2.0.3+~1.1.2-1","2.0.3+~1.1.2-2","2.0.3+~1.1.2-3","2.1.4+~1.1.2-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-102277.json"}},{"package":{"name":"node-brace-expansion","ecosystem":"Debian:13","purl":"pkg:deb/debian/node-brace-expansion?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.0.1+~1.1.0-2","2.0.3+~1.1.2-1","2.0.3+~1.1.2-2","2.0.3+~1.1.2-3","2.1.4+~1.1.2-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-102277.json"}},{"package":{"name":"node-brace-expansion","ecosystem":"Debian:14","purl":"pkg:deb/debian/node-brace-expansion?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.0.1+~1.1.0-2","2.0.3+~1.1.2-1","2.0.3+~1.1.2-2","2.0.3+~1.1.2-3","2.1.4+~1.1.2-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-102277.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"}]}