{"id":"JLSEC-2026-607","details":"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 the application declares a user-controlled column as a \"refint\" cascade primary key and facilitates user-controlled updates to that column.  In that case, a SQL injection allows a primary key update value provider to execute arbitrary SQL as the database user performing the primary key update.  Versions before PostgreSQL 18.4, 17.10, 16.14, 15.18, and 14.23 are affected.","modified":"2026-06-08T14:00:04.351840990Z","published":"2026-06-08T13:54:13.679Z","upstream":["CVE-2026-6637"],"database_specific":{"sources":[{"id":"CVE-2026-6637","published":"2026-05-14T14:16:25.820Z","database_specific":{"status":"Analyzed"},"html_url":"https://nvd.nist.gov/vuln/detail/CVE-2026-6637","url":"https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-6637","imported":"2026-06-08T13:34:10.069Z","modified":"2026-05-18T15:05:21.300Z"}],"license":"CC-BY-4.0"},"references":[{"type":"WEB","url":"https://www.postgresql.org/support/security/CVE-2026-6637/"}],"affected":[{"package":{"name":"LibPQ_jll","ecosystem":"Julia","purl":"pkg:julia/LibPQ_jll?uuid=08be9ffa-1c94-5ee5-a977-46a84ec9b350"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"16.14.0+0"}]}],"database_specific":{"source":"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-607.json"}}],"schema_version":"1.7.5"}