{"id":"DEBIAN-CVE-2026-4427","details":"A flaw was found in pgproto3. A malicious or compromised PostgreSQL server can exploit this by sending a DataRow message with a negative field length. This input validation vulnerability can lead to a denial of service (DoS) due to a slice bounds out of range panic.","modified":"2026-03-30T19:01:21.638199Z","published":"2026-03-19T15:16:28.710Z","withdrawn":"2026-03-30T19:01:21.638199Z","upstream":["CVE-2026-4427"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-4427"}],"affected":[{"package":{"name":"golang-github-jackc-pgproto3","ecosystem":"Debian:12","purl":"pkg:deb/debian/golang-github-jackc-pgproto3?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.2.0-2","2.3.2-1","2.3.3-1","2.3.3-1~exp0","2.3.3-2"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-4427.json"}},{"package":{"name":"golang-github-jackc-pgproto3","ecosystem":"Debian:13","purl":"pkg:deb/debian/golang-github-jackc-pgproto3?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.3.2-1","2.3.3-1","2.3.3-1~exp0","2.3.3-2"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-4427.json"}},{"package":{"name":"golang-github-jackc-pgproto3","ecosystem":"Debian:14","purl":"pkg:deb/debian/golang-github-jackc-pgproto3?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.3.3-2"}]}],"versions":["2.3.2-1","2.3.3-1","2.3.3-1~exp0"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-4427.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}