CVE-2026-44291

protobufjs compiles protobuf definitions into JavaScript (JS) functions. Prior to 7.5.6 and 8.0.2, protobufjs used plain objects with inherited prototypes for internal type lookup tables used by generated encode and decode functions. If Object.prototype had already been polluted, those lookup tables could resolve attacker-controlled inherited properties as valid protobuf type information. This could cause attacker-controlled strings to be emitted into generated JavaScript code. This vulnerability is fixed in 7.5.6 and 8.0.2.

CVSS v3 8.1 HIGH

8.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.2 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/protobufjs/protobuf.js/security/advisories/GHSA-75px-5xx7-5xc7	Mitigation 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::*

History

No history.

Information

Published : 2026-05-13 16:16

Updated : 2026-06-17 10:50

NVD link : CVE-2026-44291

Mitre link : CVE-2026-44291

CVE.ORG link : CVE-2026-44291

JSON object : View

Products Affected

protobufjs_project

protobufjs

CWE

CWE-94

Improper Control of Generation of Code ('Code Injection')

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