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CVE-2026-33816 — Memory-safety vulnerability in...

CRITICAL

Memory-safety vulnerability in github.com/jackc/pgx/v5.

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

Summary

Memory-safety vulnerability in github.com/jackc/pgx/v5.

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

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

  • CWE-20
    Improper Input ValidationMITRE

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-2026-33816?
Memory-safety vulnerability in github.com/jackc/pgx/v5. 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-2026-33816?
CVE-2026-33816 affects github.com/jackc/pgx/v5. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2026-33816 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-9jj7-4m8r-rfcm
GO-2026-4772

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