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GO-2026-6173
Pre-protocol error reader permits unbounded memory consumption in github.com/lib/pq
Details
The special-case parser for PostgreSQL pre-protocol plain-text errors in github.com/lib/pq calls bufio.Reader.ReadString(0) without a byte limit. A malicious PostgreSQL endpoint or active network attacker on an unauthenticated transport can send an error message response with non-NUL bytes continuously, causing the client to buffer an arbitrarily large string and crash with an unrecoverable out-of-memory error.
Are you affected?
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Affected packages
Go / github.com/lib/pq
Introduced in:
1.11.0 No fixed version published yet for github.com/lib/pq (go modules). Pin to a known-safe version or switch to an alternative.