CVE-2026-59876: protobufjs project protobufjs

csirt@kutim:~/threat-intel/cve/CVE-2026-59876

CVSS 4.8 · Medium EPSS 0,35%

Kerentanan Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution') pada protobufjs project protobufjs. Skor CVSS 3.1 4.8 (Medium) menurut NVD.

Deskripsi (NVD)

protobufjs compiles protobuf definitions into JavaScript (JS) functions. From 8.2.0 until 8.6.5, the protobufjs Text Format extension parsed string-keyed map entries using ordinary property assignment, allowing a map entry with key __proto__ to change the prototype of the returned map object instead of creating an own map entry in protobufjs/ext/textformat. This issue is fixed in version 8.6.5.

Rincian

Terbit di NVD: 8 Juli 2026
Terakhir diubah: 13 Juli 2026
Status NVD: Analyzed
CVSS 3.1: 4.8 (Medium), sumber NVD
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N · uraikan di kalkulator
Jenis kelemahan (CWE): CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
EPSS (30 hari): 0,35% peluang dieksploitasi; lebih tinggi dari 26,7% CVE lain

Produk dan versi terdampak

Vendor	Produk	Versi terdampak
protobufjs project	protobufjs	Versi 8.2.0 hingga sebelum 8.6.5

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

https://github.com/protobufjs/protobuf.js/security/advisories/GHSA-jfj6-75fj-8934 mitigasi · advisory vendor
https://github.com/protobufjs/protobuf.js/commit/9f97fe413072d3beb52c74e62d88ea8adc9444d8 patch
https://github.com/protobufjs/protobuf.js/pull/2335 issue tracking · patch
https://github.com/protobufjs/protobuf.js/releases/tag/protobufjs-v8.6.5 product · release notes

Sumber: NVD · CVE.org · EPSS. Halaman ini disusun otomatis dari data tersebut; pembaruan terakhir 5 Okt 2026, 20:11 WITA. Kalau sistem di Perangkat Daerah memakai produk ini dan butuh bantuan, laporkan lewat kanal pelaporan.