CVE-2026-44290 PUBLISHED

protobufjs: Process-wide denial of service through unsafe option paths

Assigner: GitHub_M
Reserved: 05.05.2026 Published: 13.05.2026 Updated: 13.05.2026

protobufjs compiles protobuf definitions into JavaScript (JS) functions. Prior to 7.5.6 and 8.0.2, protobufjs allowed certain schema option paths to traverse through inherited object properties while applying options. A crafted protobuf schema or JSON descriptor could cause option handling to write to properties on global JavaScript constructors, corrupting process-wide built-in functionality. This vulnerability is fixed in 7.5.6 and 8.0.2.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS Score: 7.5

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	None
Privileges Required	None	Integrity Impact	None
User Interaction	None	Availability Impact	High

CVSS 3.1

Product Status

Vendor	protobufjs
Product	protobuf.js
Versions	Version < 7.5.6 is affected Version >= 8.0.0, < 8.0.2 is affected

References

https://github.com/protobufjs/protobuf.js/security/advisories/GHSA-jvwf-75h9-cwgg

Problem Types

CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') CWE