{"id":"DEBIAN-CVE-2026-59869","details":"js-yaml is a JavaScript YAML parser and dumper. From 3.0.0 before 3.15.0 and from 4.0.0 before 4.3.0, js-yaml can spend quadratic CPU time parsing a document whose size grows only linearly when a chain of mappings uses merge keys where each mapping merges the previous one. This issue is fixed in versions 3.15.0 and 4.3.0.","modified":"2026-08-04T05:47:46.147068729Z","published":"2026-07-08T16:16:33.423Z","upstream":["CVE-2026-59869"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-59869"}],"affected":[{"package":{"name":"node-js-yaml","ecosystem":"Debian:11","purl":"pkg:deb/debian/node-js-yaml?arch=source&distro=bullseye"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.14.1+dfsg+~3.12.6-2","4.1.0+dfsg+~4.0.5-1","4.1.0+dfsg+~4.0.5-2","4.1.0+dfsg+~4.0.5-3","4.1.0+dfsg+~4.0.5-4","4.1.0+dfsg+~4.0.5-5","4.1.0+dfsg+~4.0.5-6","4.1.0+dfsg+~4.0.5-7","4.1.1+dfsg+~4.0.9-1","4.2.0+~4.0.9-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-59869.json"}},{"package":{"name":"node-js-yaml","ecosystem":"Debian:12","purl":"pkg:deb/debian/node-js-yaml?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.1.0+dfsg+~4.0.5-7","4.1.1+dfsg+~4.0.9-1","4.2.0+~4.0.9-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-59869.json"}},{"package":{"name":"node-js-yaml","ecosystem":"Debian:13","purl":"pkg:deb/debian/node-js-yaml?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.1.0+dfsg+~4.0.5-7","4.1.1+dfsg+~4.0.9-1","4.2.0+~4.0.9-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-59869.json"}},{"package":{"name":"node-js-yaml","ecosystem":"Debian:14","purl":"pkg:deb/debian/node-js-yaml?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.1.0+dfsg+~4.0.5-7","4.1.1+dfsg+~4.0.9-1","4.2.0+~4.0.9-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-59869.json"}}],"schema_version":"1.8.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}