CVE-2026-54269

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.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://github.com/protobufjs/protobuf.js/security/advisories/GHSA-f38q-mgvj-vph7	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:protobufjs_project:protobufjs::::::node.js::*
	cpe:2.3:a:protobufjs_project:protobufjs::::::node.js::*
	cpe:2.3:a:protobufjs_project:protobufjs-cli::::::node.js::*
	cpe:2.3:a:protobufjs_project:protobufjs-cli::::::node.js::*

History

No history.

Information

Published : 2026-06-22 18:16

Updated : 2026-06-24 20:40

NVD link : CVE-2026-54269

Mitre link : CVE-2026-54269

CVE.ORG link : CVE-2026-54269

JSON object : View

Products Affected

protobufjs_project

protobufjs-cli
protobufjs

CWE

CWE-674

Uncontrolled Recursion

CWE-754

Improper Check for Unusual or Exceptional Conditions

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