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CVE-2026-33815 — Vulnerability in github.com/jackc/pgx/v5 — CVE...

CRITICAL

pgx contains memory-safety vulnerability

Published April 7, 2026Updated September 10, 2026Source: osv

Summary

[pgx](github.com/jackc/pgx/v5) is a pure Go driver and toolkit for PostgreSQL. pgx prior to v5.9.0 contains a memory-safety vulnerability.

Advisory Timeline

  • First published April 7, 2026 (188 days ago).
  • Last revised September 10, 2026 — 155 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

Go
Update github.com/jackc/pgx/v5 to 5.9.0 or later
go get github.com/jackc/pgx/v5@v5.9.0

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (1)

Affects 1 ecosystem: go (1).

PackageEcosystemAffectedFixed In
github.com/jackc/pgx/v5
go
All versions5.9.0

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 9.8 score means for each attack dimension.

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

Frequently Asked Questions

What is CVE-2026-33815?
pgx contains memory-safety vulnerability This vulnerability has been assigned a severity rating of CRITICAL (CVSS score: 9.8/10).
How do I check if my project is affected by CVE-2026-33815?
CVE-2026-33815 affects github.com/jackc/pgx/v5. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2026-33815 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score
9.8

Exploitation is straightforward and causes maximum impact. Patch immediately.

Also Known As

GHSA-xgrm-4fwx-7qm8
GO-2026-4771

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