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TI-2026-39169 Aliases CVE-2026-54269GHSA-f38q-mgvj-vph7

protobufjs: Schema-derived names can shadow runtime-significant properties

Priority LOW 30CWE-674Published · 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 · Low
Fix status
Partial Red Hat: 2 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-674.

Summary

protobufjs compiles protobuf definitions into JavaScript (JS) functions. Prior to 8.6.0 and 7.6.3, protobufjs accepted certain schema-derived names that could collide with properties used by protobufjs runtime helpers. The known affected names are fields named hasOwnProperty, field or oneof names such as $type when loaded through protobufjs JSON/reflection descriptors, and service methods whose generated helper name is rpcCall. When affected message or service types were used, protobufjs could read schema-controlled data where it expected an own-property helper, reflected type metadata, or the base RPC helper. This could cause deterministic exceptions or recursive calls in affected decode post-checks, verification, object conversion, reflected JSON serialization, or protobufjs RPC helper invocation. This vulnerability is fixed in 8.6.0 and 7.6.3.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00402 34th percentileScored 2026-11-07
Fix Partial protobuf.js (protobufjs): 7.6.3, 8.6.0protobufjs (npm): 7.6.3, 8.6.0+1 more productRed Hat: 2 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 7.6.3; 8.0.0 to before 8.6.07.6.3, 8.6.0Patch availableCNA
—protobufjs (npm)before 7.6.37.6.3Patch availableGHSA-f38q-mgvj-vph7
—protobufjs-cli (npm)2.0.0 to before 2.5.12.5.1Patch availableGHSA-f38q-mgvj-vph7
—protobufjs-cli (npm)before 1.3.31.3.3Patch availableGHSA-f38q-mgvj-vph7
—protobufjs (npm)8.0.0 to before 8.6.08.6.0Patch availableGHSA-f38q-mgvj-vph7
  • protobuf.js Vendorprotobufjs Affected before 7.6.3; 8.0.0 to before 8.6.0 Fixed in 7.6.3, 8.6.0 Patch available CNA
  • protobufjs (npm) Vendor— Affected before 7.6.3 Fixed in 7.6.3 Patch available GHSA-f38q-mgvj-vph7
  • protobufjs-cli (npm) Vendor— Affected 2.0.0 to before 2.5.1 Fixed in 2.5.1 Patch available GHSA-f38q-mgvj-vph7
  • protobufjs-cli (npm) Vendor— Affected before 1.3.3 Fixed in 1.3.3 Patch available GHSA-f38q-mgvj-vph7
  • protobufjs (npm) Vendor— Affected 8.0.0 to before 8.6.0 Fixed in 8.6.0 Patch available GHSA-f38q-mgvj-vph7

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:protobufjs_project:protobufjs:*:*:*:*:*:node.js:*:*before 7.6.3; 8.0.0 to before 8.6.0Vulnerableprotobufjs
cpe:2.3:a:protobufjs_project:protobufjs-cli:*:*:*:*:*:node.js:*:*before 1.3.3; 2.0.0 to before 2.5.1Vulnerableprotobufjs
  • cpe:2.3:a:protobufjs_project:protobufjs:*:*:*:*:*:node.js:*:* Versions before 7.6.3; 8.0.0 to before 8.6.0 Vulnerable ·protobufjs
  • cpe:2.3:a:protobufjs_project:protobufjs-cli:*:*:*:*:*:node.js:*:* Versions before 1.3.3; 2.0.0 to before 2.5.1 Vulnerable ·protobufjs

Remediation

  • Fix · CNA protobuf.js (protobufjs) Fixed in 7.6.3, 8.6.0
  • Fix · GHSA-f38q-mgvj-vph7 protobufjs (npm) Fixed in 7.6.3 Advisory →
  • Fix · GHSA-f38q-mgvj-vph7 protobufjs-cli (npm) Fixed in 2.5.1 Advisory →
  • Fix · GHSA-f38q-mgvj-vph7 protobufjs-cli (npm) Fixed in 1.3.3 Advisory →
  • Fix · GHSA-f38q-mgvj-vph7 protobufjs (npm) Fixed in 8.6.0 Advisory →

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux AI (RHEL AI) 3AffectedNo fix yet: Fix deferred
Red Hat OpenShift AI (RHOAI)AffectedNo fix yet: Fix deferred
Not affected: 13 products
  • Cryostat 4
  • OpenShift Pipelines
  • OpenShift Service Mesh 3
  • Red Hat Ansible Automation Platform 2
  • Red Hat Build of Podman Desktop
  • Red Hat Ceph Storage 9
  • Red Hat Developer Hub 1
  • Red Hat Enterprise Linux 8
  • Red Hat Hardened Images
  • Red Hat OpenShift Container Platform 4
  • Red Hat OpenShift Container Platform 5
  • Red Hat Openshift Data Foundation 4
  • Self-service automation portal 2

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-54269
  2. 2026-10-03 Alias added: GHSA-f38q-mgvj-vph7
  3. 2026-10-27 Affected versions changed · Red Hat
  4. 2026-11-07 Affected versions changed · Red Hat

References

Advisory 2

Other 1

  • 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