CVE-2026-33816 (GCVE-0-2026-33816)

Vulnerability from cvelistv5 – Published: 2026-04-07 15:19 – Updated: 2026-06-30 03:15
VLAI
Title
CVE-2026-33816 in github.com/jackc/pgx
Summary
Memory-safety vulnerability in github.com/jackc/pgx/v5.
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
8.3 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
Go
References
URL Tags
https://pkg.go.dev/vuln/GO-2026-4772
https://access.redhat.com/security/cve/CVE-2026-33816 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2455972 issue-trackingx_refsource_REDHAT
https://security.access.redhat.com/data/csaf/v2/v… x_sadp-csaf-vex
https://access.redhat.com/errata/RHSA-2026:17789 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:19137 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:26636 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:22423 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:24503 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:24539 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:25273 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:13829 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:11070 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:11217 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:13791 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:13907 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:26519 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:24479 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:24475 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:24482 vendor-advisoryx_refsource_REDHAT
Impacted products
Vendor Product Version
github.com/jackc/pgx/v5 github.com/jackc/pgx/v5/pgproto3 Affected: 0 , < 5.9.0 (semver)
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Red Hat Cryostat 4 on RHEL 9     cpe:/a:redhat:cryostat:4::el9
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Red Hat Red Hat Enterprise Linux AppStream (v. 10)     cpe:/o:redhat:enterprise_linux:10.2
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Red Hat Custom Metric Autoscaler 2.19     cpe:/a:redhat:openshift_custom_metrics_autoscaler:2.19::el9
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Red Hat Multicluster Global Hub 1.3.4     cpe:/a:redhat:multicluster_globalhub:1.3::el9
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Red Hat Multicluster Global Hub 1.7.1     cpe:/a:redhat:multicluster_globalhub:1.7::el9
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Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.15     cpe:/a:redhat:acm:2.15::el9
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Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.16     cpe:/a:redhat:acm:2.16::el9
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Red Hat Red Hat Advanced Cluster Security for Kubernetes 4.10     cpe:/a:redhat:advanced_cluster_security:4.10::el8
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Red Hat Red Hat Advanced Cluster Security for Kubernetes 4.8     cpe:/a:redhat:advanced_cluster_security:4.8::el8
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Red Hat Red Hat Advanced Cluster Security for Kubernetes 4.9     cpe:/a:redhat:advanced_cluster_security:4.9::el8
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Red Hat Red Hat Hardened Images     cpe:/a:redhat:hummingbird:1
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Red Hat Red Hat OpenShift Pipelines 1.21     cpe:/a:redhat:openshift_pipelines:1.21::el9
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Red Hat Red Hat Trusted Artifact Signer 1.3     cpe:/a:redhat:trusted_artifact_signer:1.3::el9
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Red Hat Custom Metric Autoscaler operator for Red Hat Openshift     cpe:/a:redhat:openshift_custom_metrics_autoscaler:2
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Red Hat Multicluster Engine for Kubernetes     cpe:/a:redhat:multicluster_engine
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Red Hat Multicluster Global Hub     cpe:/a:redhat:multicluster_globalhub
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Red Hat Red Hat 3scale API Management Platform 2     cpe:/a:redhat:red_hat_3scale_amp:2
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Red Hat Red Hat Advanced Cluster Security 4     cpe:/a:redhat:advanced_cluster_security:4
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Red Hat Red Hat Edge Manager 1     cpe:/a:redhat:edge_manager:1
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Red Hat Red Hat OpenShift AI (RHOAI)     cpe:/a:redhat:openshift_ai
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Red Hat Red Hat Openshift Data Foundation 4     cpe:/a:redhat:openshift_data_foundation:4
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Red Hat Red Hat Trusted Artifact Signer     cpe:/a:redhat:trusted_artifact_signer:1
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Red Hat Zero Trust Workload Identity Manager - Tech Preview     cpe:/a:redhat:zero_trust_workload_identity_manager:0
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Red Hat Red Hat Quay 3     cpe:/a:redhat:quay:3
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Red Hat Zero Trust Workload Identity Manager     cpe:/a:redhat:zero_trust_workload_identity_manager:1
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Red Hat OpenShift Pipelines     cpe:/a:redhat:openshift_pipelines:1
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    "assignerShortName": "Go",
    "cveId": "CVE-2026-33816",
    "datePublished": "2026-04-07T15:19:24.529Z",
    "dateReserved": "2026-03-23T20:35:32.814Z",
    "dateUpdated": "2026-06-30T03:15:58.287Z",
    "state": "PUBLISHED"
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      "date": "2026-06-29",
      "epss": "0.00378",
      "percentile": "0.29644"
    },
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    "vulnrichment": {
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      "dataType": "CVE_RECORD",
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  }
}


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Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.