{"id":"CVE-2026-6479","state":"PUBLISHED","title":"PostgreSQL SSL/GSS init causes denial of service, via uncontrolled recursion","description":"Uncontrolled recursion in PostgreSQL SSL and GSS negotiation allows an attacker able to connect to a PostgreSQL AF_UNIX socket to achieve sustained denial of service.  If SSL and GSS are both disabled, an attacker can do the same via access to a PostgreSQL TCP socket.  Versions before PostgreSQL 18.4, 17.10, 16.14, 15.18, and 14.23 are affected.","publishedAt":"2026-05-14T13:00:13.859Z","updatedAt":"2026-05-14T15:26:20.166Z","severity":{"score":7.5,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","source":"PostgreSQL"},"assigner":"PostgreSQL","products":["n/a PostgreSQL"],"affected":[{"vendor":"n/a","product":"PostgreSQL","defaultStatus":"unaffected","versions":[{"version":"18","status":"affected","lessThan":"18.4","versionType":"rpm"},{"version":"17","status":"affected","lessThan":"17.10","versionType":"rpm"},{"version":"16","status":"affected","lessThan":"16.14","versionType":"rpm"},{"version":"15","status":"affected","lessThan":"15.18","versionType":"rpm"},{"version":"0","status":"affected","lessThan":"14.23","versionType":"rpm"}]}],"references":["https://www.postgresql.org/support/security/CVE-2026-6479/"],"weaknesses":["CWE-674"],"ingestedAt":"2026-10-29T20:12:49.727Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/6xxx/CVE-2026-6479.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-6479","state":"PUBLISHED","datePublished":"2026-05-14T13:00:13.859Z","dateUpdated":"2026-05-14T15:26:20.166Z","assignerShortName":"PostgreSQL","assignerOrgId":"f86ef6dc-4d3a-42ad-8f28-e6d5547a5007","dateReserved":"2026-04-17T00:45:37.869Z"},"containers":{"cna":{"title":"PostgreSQL SSL/GSS init causes denial of service, via uncontrolled recursion","descriptions":[{"lang":"en","value":"Uncontrolled recursion in PostgreSQL SSL and GSS negotiation allows an attacker able to connect to a PostgreSQL AF_UNIX socket to achieve sustained denial of service.  If SSL and GSS are both disabled, an attacker can do the same via access to a PostgreSQL TCP socket.  Versions before PostgreSQL 18.4, 17.10, 16.14, 15.18, and 14.23 are affected."}],"affected":[{"vendor":"n/a","product":"PostgreSQL","defaultStatus":"unaffected","versions":[{"version":"18","status":"affected","lessThan":"18.4","versionType":"rpm"},{"version":"17","status":"affected","lessThan":"17.10","versionType":"rpm"},{"version":"16","status":"affected","lessThan":"16.14","versionType":"rpm"},{"version":"15","status":"affected","lessThan":"15.18","versionType":"rpm"},{"version":"0","status":"affected","lessThan":"14.23","versionType":"rpm"}]}],"references":[{"url":"https://www.postgresql.org/support/security/CVE-2026-6479/"}],"metrics":[{"format":"CVSS","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","baseScore":7.5,"baseSeverity":"HIGH"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-674","lang":"en","type":"CWE","description":"Uncontrolled Recursion"}]}],"providerMetadata":{"shortName":"PostgreSQL","orgId":"f86ef6dc-4d3a-42ad-8f28-e6d5547a5007","dateUpdated":"2026-05-14T13:00:13.859Z"},"workarounds":[{"lang":"en","value":"enable SSL and/or GSS; disable unix_socket_directories"}],"credits":[{"lang":"en","value":"The PostgreSQL project thanks Calif.io in collaboration with Claude and Anthropic Research for reporting this problem."}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-05-14T15:26:13.223741Z","id":"CVE-2026-6479","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-05-14T15:26:20.166Z"}}]}}}