CVE-2026-44290

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

State: Published
Severity: 7.5 High
Published: May 13, 2026
Updated: May 14, 2026
Reserved: May 5, 2026

Description

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.

Scores

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

Weaknesses

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

Affected Products

Product	Versions
protobuf.jsprotobufjs	< 7.5.6Affected >= 8.0.0, < 8.0.2Affected

References

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

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