CVE-2026-33816 — Improper Input Validation in Jackc PGX V5 Github.com Jackc PGX V5 Pgproto3

CWE-20 — Improper Input ValidationCWE-787 — Out-of-bounds Write16 documents7 sources
Severity
9.8CRITICALNVD
EPSS
0.1%
top 82.52%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Github.com Jackc PGX V5 Github.com Jackc PGX V5 Pgproto3Github.com Jackc PGX V5
Timeline
PublishedApr 7

Description

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

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitability: 3.9 | Impact: 5.9

Affected Packages2 packages

🔴Vulnerability Details

3
GHSA
GHSA-9jj7-4m8r-rfcm: Memory-safety vulnerability in github↗2026-04-07
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GHSA
Memory-safety vulnerability in github.com/jackc/pgx/v5.↗2026-04-07
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OSV
CVE-2026-33816 in github.com/jackc/pgx↗2026-04-07
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📋Vendor Advisories

1
Red Hat
github.com/jackc/pgx/v5/pgproto3: github.com/jackc/pgx: Memory-safety vulnerability↗2026-04-07
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🕵️Threat Intelligence

1
Wiz
CVE-2026-33816 Impact, Exploitability, and Mitigation Steps | Wiz↗
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💬Community

10
Bugzilla
CVE-2026-33816 golang-github-jackc-pgx5: github.com/jackc/pgx: Memory-safety vulnerability [fedora-all]↗2026-04-07
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Bugzilla
CVE-2026-33816 go-fdo-server: github.com/jackc/pgx: Memory-safety vulnerability [fedora-all]↗2026-04-07
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Bugzilla
CVE-2026-33816 osbuild-composer: github.com/jackc/pgx: Memory-safety vulnerability [fedora-all]↗2026-04-07
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Bugzilla
CVE-2026-33816 openbao: github.com/jackc/pgx: Memory-safety vulnerability [fedora-all]↗2026-04-07
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Bugzilla
CVE-2026-33816 netdata: github.com/jackc/pgx: Memory-safety vulnerability [fedora-all]↗2026-04-07
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