CVE-2026-44290

EUVD-2026-30028

13.05.2026, 16:16

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.

Prototype Pollution

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
NIST	Primary	7.5 HIGH	NETWORK	LOW	NONE	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Base Score

CVSS 3.x

EPSS Score

Percentile: 29%

Affected Products (NVD)

Vendor	Product	Version
protobufjs_project	protobufjs	𝑥 < 7.5.6
protobufjs_project	protobufjs	8.0.0 ≤ 𝑥 < 8.0.2

𝑥

= Vulnerable software versions

Common Weakness Enumeration

CWE-1321 - Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
The software receives input from an upstream component that specifies attributes that are to be initialized or updated in an object, but it does not properly control modifications of attributes of the object prototype.

References

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