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CVE-2026-33816

39
FAUCET Score

CVE-2026-33816 is a critical memory-safety vulnerability affecting the PostgreSQL driver library github.com/pgx/v5. This flaw has a CVSS score of 9.8, indicating severe potential impact across confidentiality, integrity, and availability. The vulnerability can be exploited remotely over the network without authentication or user interaction, making it highly accessible to threat actors. Based on current indicators, there is no evidence of active exploitation in the wild, as the vulnerability is not listed on the CISA Known Exploited Vulnerabilities catalog and shows minimal community engagement on the Hot List. However, organizations should prioritize patching efforts given the critical severity rating and the ease of exploitation, regardless of current exploitation status.

Impacted Technologies

VendorProductVersion(s)CPE
< 5.9.0CPE matchmatch criteria
cpe:2.3:a:jackc:pgx:*:*:*:*:*:go:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.56%
Probability of exploitation in next 30 days
EPSS Percentile
43.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0056 is in the 23rd percentile among its peer group of 36,862 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

gopatch availablevia ghsa
Product: github.com/jackc/pgx/v5Fixed in: 5.9.0

Vendor Advisories (1)

goGHSA-9jj7-4m8r-rfcmcritical

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

Apr 7, 2026

References

access.redhat.com / errata/RHSA-2026:11070
access.redhat.com / errata/RHSA-2026:11217
access.redhat.com / errata/RHSA-2026:13791
access.redhat.com / errata/RHSA-2026:13829
access.redhat.com / errata/RHSA-2026:13907
access.redhat.com / errata/RHSA-2026:17789
access.redhat.com / errata/RHSA-2026:19137
access.redhat.com / errata/RHSA-2026:22423
access.redhat.com / errata/RHSA-2026:24475
access.redhat.com / errata/RHSA-2026:24479
access.redhat.com / errata/RHSA-2026:24482
access.redhat.com / errata/RHSA-2026:24503
access.redhat.com / errata/RHSA-2026:24539
access.redhat.com / errata/RHSA-2026:25273
access.redhat.com / errata/RHSA-2026:26519
access.redhat.com / errata/RHSA-2026:26636
access.redhat.com / errata/RHSA-2026:36796
access.redhat.com / errata/RHSA-2026:40118
access.redhat.com / errata/RHSA-2026:40945
access.redhat.com / errata/RHSA-2026:40984
access.redhat.com / errata/RHSA-2026:41019
access.redhat.com / security/cve/CVE-2026-33816
bugzilla.redhat.com / show_bug.cgi
security.access.redhat.com / data/csaf/v2/vex/2026/cve-2026-33816.json
pkg.go.dev / vuln/GO-2026-4772
Third Party Advisory