{"id":"DEBIAN-CVE-2026-121727","details":"Kore before 4.3.0 contains an integer underflow vulnerability in HTTP request body handling that allows unauthenticated attackers to bypass http_body_max by sending more body bytes than declared. Attackers can send oversized first segments over many concurrent POST, PUT or DELETE connections, wrapping content_length to grow buffers unbounded and exhaust worker memory.","modified":"2026-11-06T19:00:06.795516181Z","published":"2026-11-03T23:17:36.043Z","upstream":["CVE-2026-121727"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-121727"}],"affected":[{"package":{"name":"kore","ecosystem":"Debian:12","purl":"pkg:deb/debian/kore?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.1.0-6","4.2.3-1","4.2.3-2"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-121727.json"}},{"package":{"name":"kore","ecosystem":"Debian:14","purl":"pkg:deb/debian/kore?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.2.3-1","1.2.3-2","1.2.3-3","1.2.3-4","1.2.3-5","2.0.0-1","2.0.0-2","2.0.0-3","2.0.0-4","3.3.1-1","4.0.1-1","4.0.1-2","4.0.1-3","4.0.1-4","4.0.1-5","4.1.0-1","4.1.0-2","4.1.0-3","4.1.0-4","4.1.0-5","4.1.0-6","4.2.3-1","4.2.3-2"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-121727.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}