Incorrect Comparison Affecting github.com/jackc/pgx/v5/pgproto3 package, versions <5.9.0
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-GOLANG-GITHUBCOMJACKCPGXV5PGPROTO3-15923570
- published7 Apr 2026
- disclosed7 Apr 2026
- creditUnknown
Introduced: 7 Apr 2026
CVE-2026-33816 Â (opens in a new tab)How to fix?
Upgrade github.com/jackc/pgx/v5/pgproto3 to version 5.9.0 or higher.
Overview
github.com/jackc/pgx/v5/pgproto3 is a low-level PostgreSQL database driver
Affected versions of this package are vulnerable to Incorrect Comparison in the FunctionCall.Decode() function. An attacker can cause a crash on 64-bit machine by sending a null argument in a FunctionCall response from PostgreSQL server since the intermediate int32() cast is absent in Decode() function.