{"id":"UBUNTU-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due to a slice bounds out of range panic.","modified":"2026-04-02T21:23:22.420590Z","published":"2026-03-19T15:16:00Z","withdrawn":"2026-04-02T17:29:39Z","upstream":["CVE-2026-4427"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-4427"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-4427"},{"type":"REPORT","url":"https://github.com/jackc/pgx/issues/2507"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-4427"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2448626"},{"type":"REPORT","url":"https://github.com/golang/vulndb/issues/4518"},{"type":"REPORT","url":"https://github.com/jackc/pgproto3"},{"type":"REPORT","url":"https://securityinfinity.com/research/memory-safety-vulnerabilities-in-go-postgresql-wire-protocol-parsers-pgproto3-pgx"}],"affected":[{"package":{"name":"golang-github-jackc-pgproto3","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/golang-github-jackc-pgproto3@2.3.2-1?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.2.0-2","2.3.2-1"],"ecosystem_specific":{"binaries":[{"binary_name":"golang-github-jackc-pgproto3-v2-dev","binary_version":"2.3.2-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-4427.json"}},{"package":{"name":"golang-github-jackc-pgproto3","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/golang-github-jackc-pgproto3@2.3.2-1?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.3.2-1"],"ecosystem_specific":{"binaries":[{"binary_name":"golang-github-jackc-pgproto3-v2-dev","binary_version":"2.3.2-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-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"},{"type":"Ubuntu","score":"medium"}]}