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TI-2026-32263 Aliases CVE-2026-44292GHSA-fx83-v9x8-x52w

protobufjs: Prototype injection in generated message constructors

Priority LOW 30CWE-1321Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · Low · None
Fix status
Partial Red Hat: 4 fixed, 4 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Red Hat.

Summary

protobufjs compiles protobuf definitions into JavaScript (JS) functions. Prior to 7.5.6 and 8.0.2, protobufjs generated message constructors copied enumerable properties from a provided properties object without filtering the __proto__ key. If an application constructed a message from an attacker-controlled plain object, an own enumerable __proto__ property could alter the prototype of that individual message instance. This vulnerability is fixed in 7.5.6 and 8.0.2.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00264 18th percentileScored 2026-11-07
Fix Partial protobuf.js (protobufjs): 7.5.6, 8.0.2protobufjs (npm): 7.5.6, 8.0.2Red Hat: 5 advisoriesRed Hat: 4 fixed, 4 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
protobufjsprotobuf.jsbefore 7.5.6; 8.0.0 to before 8.0.27.5.6, 8.0.2Patch availableCNA
—protobufjs (npm)before 7.5.67.5.6Patch availableGHSA-fx83-v9x8-x52w
—protobufjs (npm)8.0.0 to before 8.0.28.0.2Patch availableGHSA-fx83-v9x8-x52w
  • protobuf.js Vendorprotobufjs Affected before 7.5.6; 8.0.0 to before 8.0.2 Fixed in 7.5.6, 8.0.2 Patch available CNA
  • protobufjs (npm) Vendor— Affected before 7.5.6 Fixed in 7.5.6 Patch available GHSA-fx83-v9x8-x52w
  • protobufjs (npm) Vendor— Affected 8.0.0 to before 8.0.2 Fixed in 8.0.2 Patch available GHSA-fx83-v9x8-x52w

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:protobufjs_project:protobufjs:*:*:*:*:*:node.js:*:*before 7.5.6; 8.0.0 to before 8.0.2Vulnerableprotobufjs
  • cpe:2.3:a:protobufjs_project:protobufjs:*:*:*:*:*:node.js:*:* Versions before 7.5.6; 8.0.0 to before 8.0.2 Vulnerable ·protobufjs

Remediation

  • Fix · CNA protobuf.js (protobufjs) Fixed in 7.5.6, 8.0.2
  • Fix · GHSA-fx83-v9x8-x52w protobufjs (npm) Fixed in 7.5.6 Advisory →
  • Fix · GHSA-fx83-v9x8-x52w protobufjs (npm) Fixed in 8.0.2 Advisory →

Red Hat 5 advisories

  • RHSA-2026:84734 Released 2026-10-19 · Red Hat rating Critical
    RHOAI 3.4.5 - Red Hat OpenShift AI
    • Red Hat OpenShift AI 3.4 registry.redhat.io/rhoai/odh-ai-gateway-payload-processing-rhel9, registry.redhat.io/rhoai/odh-automl-rhel9, registry.redhat.io/rhoai/odh-autorag-rhel9 +47
  • RHSA-2026:60520 Released 2026-08-27 · Red Hat rating Critical
    RHOAI 3.4.4 - Red Hat OpenShift AI
    • Red Hat OpenShift AI 3.4 registry.redhat.io/rhoai/odh-automl-rhel9, registry.redhat.io/rhoai/odh-autorag-rhel9, registry.redhat.io/rhoai/odh-built-in-detector-rhel9 +47
  • RHSA-2026:57487 Released 2026-08-26 · Red Hat rating Important
    OpenShift Container Platform 4.18.54 bug fix and security update
    • Red Hat OpenShift Container Platform 4.18 registry.redhat.io/openshift4/frr-rhel9, registry.redhat.io/openshift4/ose-cli-rhel9, registry.redhat.io/openshift4/ose-cloud-credential-rhel9-operator +2
Show 2 more Red Hat advisories
  • RHSA-2026:48151 Released 2026-07-29 · Red Hat rating Important
    Red Hat build of Cryostat security update
    • Cryostat 4 on RHEL 9 cryostat/cryostat-grafana-dashboard-rhel9, cryostat/cryostat-openshift-console-plugin-rhel9, cryostat/cryostat-reports-rhel9 +4
  • RHSA-2026:42815 Released 2026-07-21 · Red Hat rating Important
    Red Hat Ansible Automation Platform 2.2 security update
    • Red Hat Ansible Automation Platform 2.2 registry.redhat.io/ansible-automation-platform/automation-portal

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
OpenShift PipelinesAffectedNo fix yet
Red Hat Ceph Storage 9AffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux AI (RHEL AI) 3AffectedNo fix yet
Self-service automation portal 2AffectedNo fix yet
Cryostat 4 on RHEL 9Fixed RHSA-2026:48151
Red Hat Ansible Automation Platform 2.2Fixed RHSA-2026:42815
Red Hat OpenShift AI 3.4Fixed RHSA-2026:60520, RHSA-2026:84734
Red Hat OpenShift Container Platform 4.18Fixed RHSA-2026:57487
Not affected: 14 products
  • Cryostat 4 on RHEL 9
  • OpenShift Pipelines
  • OpenShift Service Mesh 3
  • Red Hat Ansible Automation Platform 2
  • Red Hat Build of Podman Desktop
  • Red Hat Developer Hub 1
  • Red Hat Enterprise Linux 8
  • Red Hat Hardened Images
  • Red Hat OpenShift AI (RHOAI)
  • Red Hat OpenShift AI 3.4
  • Red Hat OpenShift Container Platform 4
  • Red Hat OpenShift Container Platform 4.18
  • Red Hat OpenShift Container Platform 5
  • Red Hat Openshift Data Foundation 4

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-44292
  2. 2026-10-03 Alias added: GHSA-fx83-v9x8-x52w
  3. 2026-10-20 Fix available: RHSA-2026:84734 · Red Hat
  4. 2026-10-20 Affected versions changed · Red Hat
  5. 2026-10-27 Affected versions changed · Red Hat
  6. 2026-10-31 Affected versions changed · Red Hat

References

Advisory 2

Other 3

  • TI-2026-29851 protobufjs has an arbitrary code execution issue CVSS 4.0CRITICAL 9.4
  • TI-2023-18481 "protobuf.js (aka protobufjs) 6.10.0 through 7.x before 7.2.5 allows Prototype Pollution… CVSS 3.1CRITICAL 9.8
  • TI-2026-32260 protobufjs: Denial of service through unbounded protobuf recursion CVSS 3.1HIGH 7.5
  • TI-2022-09438 Prototype pollution in protobufjs CVSS 3.1HIGH 8.2
  • TI-2026-42691 protobufjs: Denial of Service via infinite loop in .proto option parsing CVSS 3.1HIGH 7.5
  • TI-2026-35993 protobufjs: Denial of service through unbounded Any expansion during JSON conversion CVSS 3.1HIGH 7.5
See all 16 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences