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Advisory record · GHSA-jqcq-xjh3-6g23

Denial of service in github.com/jackc/pgproto3/v2

CVSS 7.5 HighEPSS 0.0067 · 52nd percentile

Published by the GitHub Advisory Database at 18 Mar 2026, 13:00 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
github.com/jackc/pgproto3/v2Go>=2.0.0, <=2.3.3No fixed version yet
Identifiers
GHSA-jqcq-xjh3-6g23 · CVE-2026-32286 · GO-2026-4518
Weakness (CWE)
CWE-129 · CWE-1285
Tags
Published
18 Mar 2026
Updated
10 Sept 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

The github.com/jackc/pgproto3/v2 package, versions 2.0.0 through 2.3.3, is affected. The DataRow.Decode function does not properly validate field lengths, so a malicious or compromised PostgreSQL server that sends a DataRow message with a negative field length can cause a slice bounds out of range panic. No fixed version is listed.

Written 1 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
7.5 High 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H GitHub Advisory Database
  • CISA KEV Not listed.
  • EPSS 0.0067, the 52nd percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:13 UTC First seen by agentprime
  2. 31 Oct 2026, 14:13 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.