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TI-2026-42691 Aliases CVE-2026-59877GHSA-j3f2-48v5-ccww

protobufjs: Denial of Service via infinite loop in .proto option parsing

Priority LOW 39CWE-835Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Partial Red Hat: 13 fixed, 7 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-835.

Summary

protobufjs compiles protobuf definitions into JavaScript (JS) functions. Prior to 7.6.5 and 8.6.6, protobufjs parsed option names by advancing through schema tokens until reaching an = token without checking for end of input, so a crafted .proto schema that opens an option declaration and ends prematurely can cause parse, Root.load, or Root.loadSync to loop indefinitely. This issue is fixed in versions 7.6.5 and 8.6.6.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00365 30th percentileScored 2026-11-07
Fix Partial protobuf.js (protobufjs): 7.6.5, 8.6.6protobufjs (npm): 7.6.5, 8.6.6Red Hat: 15 advisoriesRed Hat: 13 fixed, 7 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.js7.5.0 to before 7.6.5; 8.0.0 to before 8.6.67.6.5, 8.6.6Patch availableCNA
—protobufjs (npm)7.5.0 to before 7.6.57.6.5Patch availableGHSA-j3f2-48v5-ccww
—protobufjs (npm)8.0.0 to before 8.6.68.6.6Patch availableGHSA-j3f2-48v5-ccww
  • protobuf.js Vendorprotobufjs Affected 7.5.0 to before 7.6.5; 8.0.0 to before 8.6.6 Fixed in 7.6.5, 8.6.6 Patch available CNA
  • protobufjs (npm) Vendor— Affected 7.5.0 to before 7.6.5 Fixed in 7.6.5 Patch available GHSA-j3f2-48v5-ccww
  • protobufjs (npm) Vendor— Affected 8.0.0 to before 8.6.6 Fixed in 8.6.6 Patch available GHSA-j3f2-48v5-ccww

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:protobufjs_project:protobufjs:*:*:*:*:*:node.js:*:*before 7.6.5; 8.0.0 to before 8.6.6Vulnerableprotobufjs
  • cpe:2.3:a:protobufjs_project:protobufjs:*:*:*:*:*:node.js:*:* Versions before 7.6.5; 8.0.0 to before 8.6.6 Vulnerable ·protobufjs

Remediation

  • Fix · CNA protobuf.js (protobufjs) Fixed in 7.6.5, 8.6.6
  • Fix · GHSA-j3f2-48v5-ccww protobufjs (npm) Fixed in 7.6.5 Advisory →
  • Fix · GHSA-j3f2-48v5-ccww protobufjs (npm) Fixed in 8.6.6 Advisory →

Red Hat 15 advisories

  • RHSA-2026:71179 Released 2026-09-23 · Red Hat rating Critical
    Red Hat Ansible Automation Platform 2.6 Container Release Update
    • Red Hat Ansible Automation Platform 2.6 registry.redhat.io/ansible-automation-platform-26/aap-must-gather-rhel9, registry.redhat.io/ansible-automation-platform-26/controller-rhel9, registry.redhat.io/ansible-automation-platform-26/de-minimal-rhel9 +10
  • RHSA-2026:68333 Released 2026-09-16 · Red Hat rating Important
    Red Hat build of Cryostat security update
    • Cryostat 4 on RHEL 9 cryostat/cryostat-agent-init-rhel9, cryostat/cryostat-grafana-dashboard-rhel9, cryostat/cryostat-openshift-console-plugin-rhel9 +5
  • RHSA-2026:67279 Released 2026-09-14 · Red Hat rating Critical
    Red Hat Ansible Automation Platform 2.7 Container Release Update
    • Red Hat Ansible Automation Platform 2.7 registry.redhat.io/ansible-automation-platform-27/controller-rhel9, registry.redhat.io/ansible-automation-platform-27/eda-controller-rhel9, registry.redhat.io/ansible-automation-platform-27/ee-minimal-rhel9 +7
Show 12 more Red Hat advisories
  • RHSA-2026:62260 Released 2026-09-01 · Red Hat rating Important
    Red Hat OpenShift Dev Spaces 3.30.0 Release.
    • Red Hat OpenShift Dev Spaces 3.30 registry.redhat.io/devspaces/code-rhel9, registry.redhat.io/devspaces/configbump-rhel9, registry.redhat.io/devspaces/dashboard-rhel9 +7
  • RHSA-2026:60477 Released 2026-09-01 · Red Hat rating Important
    OpenShift Container Platform 4.21.31 bug fix and security update
    • Red Hat OpenShift Container Platform 4.21 registry.redhat.io/openshift4/aws-karpenter-provider-aws-rhel9, registry.redhat.io/openshift4/egress-router-cni-rhel9, registry.redhat.io/openshift4/oc-mirror-plugin-rhel9 +20
  • RHSA-2026:57365 Released 2026-08-25 · Red Hat rating Important
    OpenShift Container Platform 4.22.11 bug fix and security update
    • Red Hat OpenShift Container Platform 4.22 registry.redhat.io/openshift4/aws-karpenter-provider-aws-rhel9, registry.redhat.io/openshift4/oc-mirror-plugin-rhel9, registry.redhat.io/openshift4/ose-agent-installer-ui-rhel9 +6
  • RHSA-2026:57590 Released 2026-08-20 · Red Hat rating Important
    rh-podman-desktop security, bug fix, and enhancement update
    • Red Hat Enterprise Linux Extensions Channel (v. 10) rh-podman-desktop-1.1.2-1.el10_2
  • RHSA-2026:52768 Released 2026-08-10 · Red Hat rating Important
    Red Hat Developer Hub 1.9.8 release.
    • Red Hat Developer Hub 1.9 registry.redhat.io/rhdh/rhdh-hub-rhel9
  • RHSA-2026:51162 Released 2026-08-06 · 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/bootc-automation-portal-rhel9
  • RHSA-2026:50850 Released 2026-08-05 · Red Hat rating Important
    Red Hat Ansible Automation Platform 2.1 security update
    • Red Hat Ansible Automation Platform 2.1 registry.redhat.io/ansible-automation-platform/automation-portal
  • RHSA-2026:50839 Released 2026-08-05 · 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
  • RHSA-2026:49735 Released 2026-08-03 · Red Hat rating Important
    Kiali 2.27.2 for Red Hat OpenShift Service Mesh 3.4
    • Red Hat OpenShift Service Mesh 3.4 registry.redhat.io/openshift-service-mesh/kiali-ossmc-rhel9, registry.redhat.io/openshift-service-mesh/kiali-rhel9
  • RHSA-2026:49680 Released 2026-08-03 · Red Hat rating Important
    Kiali 2.22.8 for Red Hat OpenShift Service Mesh 3.3
    • Red Hat OpenShift Service Mesh 3.3 registry.redhat.io/openshift-service-mesh/kiali-ossmc-rhel9, registry.redhat.io/openshift-service-mesh/kiali-rhel9
  • RHSA-2026:49642 Released 2026-08-03 · Red Hat rating Important
    Red Hat Developer Hub 1.10.3 release.
    • Red Hat Developer Hub 1.10 registry.redhat.io/rhdh/rhdh-hub-rhel9, registry.redhat.io/rhdh/rhdh-rhel9-operator
  • RHSA-2026:48126 Released 2026-07-29 · Red Hat rating Important
    Red Hat Developer Hub 1.10.3 Plugin Catalog GA plugins release.
    • Red Hat Developer Hub 1.10 registry.redhat.io/rhdh/red-hat-developer-hub-backstage-plugin-lightspeed, registry.redhat.io/rhdh/red-hat-developer-hub-backstage-plugin-lightspeed-backend, registry.redhat.io/rhdh/red-hat-developer-hub-backstage-plugin-orchestrator +4

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
OpenShift PipelinesAffectedNo fix yet
Red Hat Ansible Automation Platform 2AffectedNo fix yet
Red Hat Build of Podman DesktopAffectedNo fix yet
Red Hat Ceph Storage 9AffectedNo fix yet: Fix deferred
Red Hat Enterprise Linux AI (RHEL AI) 3AffectedNo fix yet
Red Hat OpenShift Container Platform 5AffectedNo fix yet
Red Hat Openshift Data Foundation 4AffectedNo fix yet
Cryostat 4 on RHEL 9Fixed RHSA-2026:68333
Red Hat Ansible Automation Platform 2.1Fixed RHSA-2026:50850
Red Hat Ansible Automation Platform 2.2Fixed RHSA-2026:50839, RHSA-2026:51162
Red Hat Ansible Automation Platform 2.6Fixed RHSA-2026:71179
Red Hat Ansible Automation Platform 2.7Fixed RHSA-2026:67279
Red Hat Developer Hub 1.10Fixed RHSA-2026:48126, RHSA-2026:49642
Red Hat Developer Hub 1.9Fixed RHSA-2026:52768
Red Hat Enterprise Linux Extensions Channel (v. 10)Fixed RHSA-2026:57590
Red Hat OpenShift Container Platform 4.21Fixed RHSA-2026:60477
Red Hat OpenShift Container Platform 4.22Fixed RHSA-2026:57365
Red Hat OpenShift Dev Spaces 3.30Fixed RHSA-2026:62260
Red Hat OpenShift Service Mesh 3.3Fixed RHSA-2026:49680
Red Hat OpenShift Service Mesh 3.4Fixed RHSA-2026:49735
Not affected: 12 products
  • Cryostat 4 on RHEL 9
  • Red Hat Ansible Automation Platform 2.6
  • Red Hat Ansible Automation Platform 2.7
  • Red Hat Developer Hub 1.10
  • Red Hat Developer Hub 1.9
  • Red Hat Enterprise Linux 8
  • Red Hat Hardened Images
  • Red Hat OpenShift Container Platform 4
  • Red Hat OpenShift Container Platform 4.21
  • Red Hat OpenShift Container Platform 4.22
  • Red Hat OpenShift Dev Spaces 3.30
  • Red Hat OpenShift Service Mesh 3.4

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-59877
  2. 2026-10-03 Alias added: GHSA-j3f2-48v5-ccww
  3. 2026-10-23 EPSS moved to the below the 50th percentile
  4. 2026-10-23 Priority changed: MEDIUM → LOW
  5. 2026-10-31 Affected versions changed · Red Hat

References

Patch 3

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-2026-35993 protobufjs: Denial of service through unbounded Any expansion during JSON conversion CVSS 3.1HIGH 7.5
  • TI-2026-32261 protobufjs: Process-wide denial of service through unsafe option paths 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