GHSA-5x78-73v4-xg6wHigh▾ Twilightpostgres-protocol: Unbounded SCRAM iteration count allows a malicious server to cause CPU-exhaustion denial of service
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 41.3 · likelihood 0 · exploitation 0
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A malicious, compromised, or man-in-the-middle server can supply an arbitrarily
large SCRAM-SHA-256 PBKDF2 iteration count during authentication. The client
runs it inline with no upper bound, pinning a tokio worker thread for minutes
per connection, possibly stalling the whole async runtime.
Applications that connect only to a trusted database are not exposed; the risk applies to clients that may connect to untrusted or user-supplied servers, or whose connection can be intercepted by a man-in-the-middle.
postgres-protocol >= 0.3.0, < 0.6.12Upgrade to a patched release:
postgres-protocol 0.6.12Connected by shared product, vendor, weakness, or advisory.
RUSTSEC-2026-0179NoneUnbounded SCRAM iteration count allows a malicious server to cause CPU-exhaustion denial of service
GHSA-rgqc-3x5p-6gwgMediumpostgres-protocol: Panic decoding a malformed `hstore` value allows denial of service
RUSTSEC-2026-0180NonePanic decoding a malformed `hstore` value allows denial of service
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