{"schema_version":"1.3.1","id":"GO-2026-6168","modified":"2026-08-19T17:06:06Z","published":"2026-08-18T16:38:10Z","withdrawn":"2026-08-18T20:22:41Z","aliases":["CVE-2026-56869"],"summary":"WITHDRAWN: Unbounded iteration count causes CPU denial of service in github.com/lib/pq/scram","details":"(This report has been withdrawn with reason: \"Report mistakenly added without having CVE / GHSA associated\"). The SCRAM client in github.com/lib/pq/scram accepts an attacker-controlled iteration count with no upper bound and immediately performs that many PBKDF2-style HMAC rounds. A PostgreSQL endpoint or active network attacker can send a valid SCRAM server-first message with a large iteration count (such as i=2147483647), causing client authentication to consume excessive CPU resources before verifying the server signature.","affected":[{"package":{"name":"github.com/lib/pq","ecosystem":"Go"},"ranges":[{"type":"SEMVER","events":[{"introduced":"1.1.0"}]}],"ecosystem_specific":{"imports":[{"path":"github.com/lib/pq/scram","symbols":["Client.Step","NewClient"]}]}}],"references":[{"type":"REPORT","url":"https://github.com/golang/vulndb/issues/6168"}],"database_specific":{"url":"https://pkg.go.dev/vuln/GO-2026-6168","review_status":"REVIEWED"}}