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Fencer Vulns
high 7.5

CVE-2026-32286 json

Denial of service in github.com/jackc/pgproto3/v2

published 2026-03-16 7 mo ago modified 2026-09-10 59 d ago also GHSA-jqcq-xjh3-6g23 , GO-2026-4518 , EUVD-2026-16347

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 52%
public exploits
0
none known

Summary

The DataRow.Decode function fails to properly validate field lengths. A malicious or compromised PostgreSQL server can send a DataRow message with a negative field length, causing a slice bounds out of range panic.

Patch / fix

  • Red Hat Red Hat Enterprise Linux 10 0:165.1-2.el10_2
  • Red Hat Red Hat Enterprise Linux 9 0:165.1-2.el9_8
  • Red Hat Multicluster Global Hub 1.3.4 1779209992, 1779210608, 1779210675
  • Red Hat Multicluster Global Hub 1.4.5 1779579439
  • Red Hat Multicluster Global Hub 1.6.5 1780167118
  • Red Hat Red Hat Advanced Cluster Security 4.8 1777307791
  • Red Hat Red Hat multicluster global hub 1.5.3 1778867753
  • Red Hat Red Hat Quay 3.10 1776736910
  • Red Hat Red Hat Quay 3.12 1776752646
  • Red Hat Red Hat Quay 3.14 1779689392
  • Red Hat Red Hat Quay 3.15 1780891395
  • Red Hat Red Hat Quay 3.16 1779204086
  • Red Hat Red Hat Quay 3.17 1779922205
  • Red Hat Red Hat Quay 3.9 1776782369
  • golang-github-jackc-pgproto3 Debian 14 2.3.3-2

debian advisories DEBIAN-CVE-2026-32286

  • osbuild-composer RHEL 9 165.1-2.el9_8
  • osbuild-composer-core RHEL 9 165.1-2.el9_8
  • osbuild-composer-worker RHEL 9 165.1-2.el9_8
  • osbuild-composer RHEL 10.2 165.1-2.el10_2
  • osbuild-composer-core RHEL 10.2 165.1-2.el10_2
  • osbuild-composer-worker RHEL 10.2 165.1-2.el10_2

red hat advisories RHSA-2026:22714RHSA-2026:22450

  • govulncheck-vulndb openSUSE Leap 15.6 0.0.20260402T184258-150000.1.158.1
  • govulncheck-vulndb openSUSE Leap 15.6 0.0.20260326T203309-150000.1.155.2

suse advisories SUSE-SU-2026:1205-1SUSE-SU-2026:1135-1

  • govulncheck-vulndb openSUSE Leap 16.0 0.0.20260723T184607-160000.1.1

opensuse advisories openSUSE-SU-2026:21483-1

  • osbuild-composer Rocky Linux 9 165.1-2.el9_8.rocky.0.1
  • osbuild-composer Rocky Linux 10 165.1-2.el10_2.rocky.0.1

rocky linux advisories RLSA-2026:22714RLSA-2026:22450

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-32286 updated cvss 7.5

github.com/jackc/pgproto3/v2: github.com/jackc/pgproto3/v2: Denial of Service via malicious PostgreSQL server

  • Red Hat Assisted Installer for Red Hat OpenShift Container Platform 2 rhai/assisted-installer-rhel9, rhai/assisted-installer-controller-rhel9 Red Hat Multicluster Engine for Kubernetes multicluster-engine/assisted-installer-rhel8, multicluster-engine/assisted-installer-rhel9, multicluster-engine/assisted-service-8-rhel8, multicluster-engine/assisted-service-9-rhel9, multicluster-engine/assisted-installer-agent-rhel8, multicluster-engine/assisted-installer-agent-rhel9, +3 more Red Hat Advanced Cluster Management for Kubernetes 2 rhacm2/acm-search-v2-api-rhel9, rhacm2/acm-search-indexer-rhel9
    affected: workaround, no fix available
  • Red Hat Enterprise Linux 8 osbuild-composer, osbuild-composer-core, osbuild-composer-worker, osbuild-composer-dnf-json
    affected: workaround, no fix planned “Will not fix”
  • Red Hat OpenShift Cluster Manager CLI ocm-cli-clients/ocm-cli-rhel9 Red Hat OpenShift on AWS rosa
    affected: workaround, no fix available
  • Red Hat Quay 3 quay/clair-rhel8, quay/quay-operator-rhel8, quay/quay-operator-rhel9
    affected: workaround, no fix available, no fix planned “Will not fix”
  • Red Hat Multicluster Global Hub 1.3.4 multicluster-globalhub/multicluster-globalhub-agent-rhel9 1779210675, multicluster-globalhub/multicluster-globalhub-manager-rhel9 1779210608, multicluster-globalhub/multicluster-globalhub-rhel9-operator 1779209992
    fixed: vendor fix RHSA-2026:22423
  • Red Hat Multicluster Global Hub 1.4.9 multicluster-globalhub/multicluster-globalhub-grafana-rhel9 1779579439
    fixed: vendor fix RHSA-2026:22347
  • Red Hat Multicluster Global Hub 1.5.8 multicluster-globalhub/multicluster-globalhub-grafana-rhel9 1778867753
    fixed: vendor fix RHSA-2026:21769
  • Red Hat Multicluster Global Hub 1.6.6 multicluster-globalhub/multicluster-globalhub-grafana-rhel9 1780167118
    fixed: vendor fix RHSA-2026:23345
show 19 more
  • Red Hat Advanced Cluster Security 4.8 advanced-cluster-security 1777307791
    fixed: vendor fix RHSA-2026:11070
  • Red Hat Enterprise Linux AppStream (v. 9) osbuild-composer 165.1-2.el9_8, osbuild-composer-core 165.1-2.el9_8, osbuild-composer-worker 165.1-2.el9_8
    fixed: vendor fix RHSA-2026:22714
  • Red Hat Enterprise Linux AppStream (v. 10) osbuild-composer 165.1-2.el10_2, osbuild-composer-core 165.1-2.el10_2, osbuild-composer-worker 165.1-2.el10_2
    fixed: vendor fix RHSA-2026:22450
  • Red Hat OpenShift AI 3.3 rhoai/odh-data-science-pipelines-argo-argoexec-rhel9 1790132012, rhoai/odh-data-science-pipelines-argo-workflowcontroller-rhel9 1790130173
    fixed: vendor fix RHSA-2026:73987
  • Red Hat Quay 3.9 quay 1776782369
    fixed: vendor fix RHSA-2026:11996
  • Red Hat Quay 3.10 quay 1776736910
    fixed: vendor fix RHSA-2026:11916
  • Red Hat Quay 3.12 quay 1776752646
    fixed: vendor fix RHSA-2026:11856
  • Red Hat Quay 3.14 quay/quay-rhel8 1779689392
    fixed: vendor fix RHSA-2026:21017
  • Red Hat Quay 3.15 quay/quay-rhel8 1780891395
    fixed: vendor fix RHSA-2026:24853
  • Red Hat Quay 3.16 quay 1779204086
    fixed: vendor fix RHSA-2026:19375
  • Red Hat Quay 3.17 quay/quay-rhel9 1779922205
    fixed: vendor fix RHSA-2026:22465
  • Red Hat Multicluster Global Hub multicluster-globalhub/multicluster-globalhub-operator-bundle
    not affected: component not present
  • Red Hat Multicluster Global Hub 1.3.4 multicluster-globalhub/multicluster-globalhub-grafana-rhel9 1779212259, multicluster-globalhub/multicluster-globalhub-operator-bundle 1779925031, multicluster-globalhub/multicluster-globalhub-postgres-exporter-rhel9 1779924243 Red Hat Multicluster Global Hub 1.4.9 multicluster-globalhub/multicluster-globalhub-agent-rhel9 1779838819, multicluster-globalhub/multicluster-globalhub-manager-rhel9 1779839447, multicluster-globalhub/multicluster-globalhub-rhel9-operator 1779887217, multicluster-globalhub/multicluster-globalhub-operator-bundle 1779891163, multicluster-globalhub/multicluster-globalhub-postgres-exporter-rhel9 1779147132 Red Hat Multicluster Global Hub 1.5.8 multicluster-globalhub/multicluster-globalhub-agent-rhel9 1779828691, multicluster-globalhub/multicluster-globalhub-manager-rhel9 1779828813, multicluster-globalhub/multicluster-globalhub-rhel9-operator 1779828536, multicluster-globalhub/multicluster-globalhub-operator-bundle 1779837290, multicluster-globalhub/multicluster-globalhub-postgres-exporter-rhel9 1779835152 Red Hat Multicluster Global Hub 1.6.6 multicluster-globalhub/multicluster-globalhub-agent-rhel9 1780320809, multicluster-globalhub/multicluster-globalhub-manager-rhel9 1780321673, multicluster-globalhub/multicluster-globalhub-rhel9-operator 1779839087, multicluster-globalhub/multicluster-globalhub-operator-bundle 1780370487, multicluster-globalhub/multicluster-globalhub-postgres-exporter-rhel9 1779839762
    not affected: vulnerable code not present
  • Red Hat Advanced Cluster Security 4 advanced-cluster-security/rhacs-roxctl-rhel8, advanced-cluster-security/rhacs-rhel8-operator
    not affected: vulnerable code not in execute path
  • Red Hat Advanced Cluster Security 4.8 advanced-cluster-security 1776418904, advanced-cluster-security 1776727747, advanced-cluster-security 1777307791
    not affected: vulnerable code not present
  • Red Hat Hardened Images golang1.25, golang1.26
    not affected: component not present
  • Red Hat OpenShift AI (RHOAI) rhoai/odh-model-registry-rhel9 Red Hat OpenShift AI 3.3 rhoai/odh-cli-rhel9 1790070206, rhoai/rhai-cli-rhel9 1790070206, rhoai/odh-mlflow-rhel9 1789653606, rhoai/odh-trainer-rhel9 1790136369, rhoai/odh-maas-api-rhel9 1790131842, rhoai/odh-mlserver-rhel9 1789121365, +75 more Red Hat OpenShift Container Platform 4 openshift4/oc-mirror-plugin-rhel9, openshift4/ose-agent-installer-api-server-rhel8, openshift4/ose-agent-installer-api-server-rhel9, openshift4/ose-agent-installer-node-agent-rhel8, openshift4/ose-agent-installer-node-agent-rhel9, openshift4/ose-aws-cluster-api-controllers-rhel9, +4 more
    not affected: vulnerable code not present
  • Red Hat Quay 3 quay/clair-rhel9
    not affected: vulnerable code not in execute path
  • Red Hat Quay 3.9 quay 1776705534, quay 1776705943, quay 1776908959, quay 1776956008, quay 1776956601, quay 1776962931, +3 more Red Hat Quay 3.10 quay 1776705546, quay 1776706008, quay 1776784458, quay 1776784548, quay 1776785871, quay 1776785891, +3 more Red Hat Quay 3.12 quay 1776697488, quay 1776697568, quay 1776697573, quay 1776698050, quay 1776698909, quay 1776798011, +2 more Red Hat Quay 3.14 quay/clair-rhel8 1778873589, quay/quay-builder-rhel8 1778873627, quay/quay-operator-rhel8 1778873585, quay/quay-operator-bundle 1779693417, quay/quay-bridge-operator-rhel8 1778873623, quay/quay-bridge-operator-bundle 1778874411, +2 more Red Hat Quay 3.15 quay/clair-rhel8 1780584775, quay/quay-builder-rhel8 1780584626, quay/quay-operator-rhel8 1780584287, quay/quay-operator-bundle 1780894591, quay/quay-bridge-operator-rhel8 1780584376, quay/quay-bridge-operator-bundle 1780585598, +3 more Red Hat Quay 3.16 quay 1778704509, quay 1778704515, quay 1778704550, quay 1778704556, quay 1778705015, quay 1778705065, +3 more
    not affected: vulnerable code not present

2 more not affected in the full advisory

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
Proof of concept is public
Automatable
yes
Technical impact
partial
Assessed
7 mo ago

Exploit prediction

0.68% chance of exploitation in the next 30 days, higher than 52% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • securityinfinity.com https://securityinfinity.com/research/memory-safety-vulnerabilities-in-go-postgresql-wire-protocol-parsers-pgproto3-pgx referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CISA ADP 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
GitHub 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
go github.com/jackc/pgproto3/v2
>=2.0.0, <=2.3.3
>=2.0.0
 no fix listed

Affected products

  • github.com/jackc/pgproto3/v2 github.com/jackc/pgproto3/v2
  • Red Hat Red Hat Enterprise Linux 10
  • Red Hat Red Hat Enterprise Linux 9
  • Red Hat Multicluster Global Hub 1.3.4
  • Red Hat Multicluster Global Hub 1.4.5
  • Red Hat Multicluster Global Hub 1.6.5
  • Red Hat Red Hat Advanced Cluster Security 4.8
  • Red Hat Red Hat multicluster global hub 1.5.3
  • Red Hat Red Hat Quay 3.10
  • Red Hat Red Hat Quay 3.12
  • Red Hat Red Hat Quay 3.14
  • Red Hat Red Hat Quay 3.15
  • Red Hat Red Hat Quay 3.16
  • Red Hat Red Hat Quay 3.17
  • Red Hat Red Hat Quay 3.9
  • Red Hat Assisted Installer for Red Hat OpenShift Container Platform 2
  • Red Hat Multicluster Engine for Kubernetes
  • Red Hat Multicluster Global Hub
  • Red Hat Red Hat Advanced Cluster Management for Kubernetes 2
  • Red Hat Red Hat Advanced Cluster Security 4
  • Red Hat Red Hat Enterprise Linux 8
  • Red Hat Red Hat Hardened Images
  • Red Hat Red Hat OpenShift AI (RHOAI)
  • Red Hat Red Hat OpenShift Cluster Manager CLI
  • Red Hat Red Hat OpenShift Container Platform 4
  • Red Hat Red Hat OpenShift on AWS
  • Red Hat Red Hat Quay 3
  • Red Hat Red Hat Trusted Artifact Signer

Classification

Weakness
  • CWE-1285 Improper Validation of Specified Index, Position, or Offset in Input
  • CWE-129 Improper Validation of Array Index

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.