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Vulnerabilities
Vulnerability

CVE-2026-44291

Reference data from vuln.mlab.sh, coverage from our own index.

CVSS
8.1 High
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Risk score
64.8
Published
2026-05-13
Status
Published

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.

Weaknesses

CWE-94

Coverage 1

Advisories and references