{"id":"GHSA-5x78-73v4-xg6w","summary":"postgres-protocol: Unbounded SCRAM iteration count allows a malicious server to cause CPU-exhaustion denial of service","details":"A malicious, compromised, or man-in-the-middle server can supply an arbitrarily\nlarge SCRAM-SHA-256 PBKDF2 iteration count during authentication. The client\nruns it inline with no upper bound, pinning a `tokio` worker thread for minutes\nper connection, possibly stalling the whole async runtime.\n\nApplications that connect only to a trusted database are not exposed; the risk\napplies to clients that may connect to untrusted or user-supplied servers, or\nwhose connection can be intercepted by a man-in-the-middle.","aliases":["RUSTSEC-2026-0179"],"modified":"2026-09-10T03:51:13.131342432Z","published":"2026-08-24T19:43:31Z","database_specific":{"cwe_ids":["CWE-770"],"severity":"HIGH","github_reviewed":true,"github_reviewed_at":"2026-08-24T19:43:31Z","nvd_published_at":null},"references":[{"type":"WEB","url":"https://github.com/rust-postgres/rust-postgres/commit/d40097a36a85068ea50a3afbf0ce154ba439e7f0"},{"type":"PACKAGE","url":"https://github.com/rust-postgres/rust-postgres"},{"type":"WEB","url":"https://github.com/rust-postgres/rust-postgres/releases/tag/postgres-protocol-v0.6.12"},{"type":"WEB","url":"https://rustsec.org/advisories/RUSTSEC-2026-0179.html"}],"affected":[{"package":{"name":"postgres-protocol","ecosystem":"crates.io","purl":"pkg:cargo/postgres-protocol"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0.3.0"},{"fixed":"0.6.12"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/08/GHSA-5x78-73v4-xg6w/GHSA-5x78-73v4-xg6w.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"}]}