{"action":"Upgrade postgresql-18 to 18.4-1 or later.","affected":[{"fixed":"18.4-1","introduced":"0"}],"component":"postgresql-18","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["18.4-1"],"id":"tcs_01M5NTNBGF8404AW7AK1K79ZJ7","modified_at":"2026-10-01T03:03:38.474465197Z","published_at":"2026-05-14T14:16:25.820Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-6637","https://security-tracker.debian.org/tracker/CVE-2026-6637"],"severity":{"label":"high","score":8.8},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-6637#Debian:14/postgresql-18","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-6637"}],"summary":"Stack buffer overflow in PostgreSQL module \"refint\" allows an unprivileged database user to execute arbitrary code as the operating system user running the database. A distinct attack is possible if t"}