4.8

CVE-2026-59876

protobufjs: Text Format string map parsing can mutate returned map object prototype

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Protobufjs Project ≫ Protobufjs SwPlatformnode.js Version >= 8.2.0 < 8.6.5
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.22% 0.124
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 4.8 2.2 2.5
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
security-advisories@github.com 4.8 2.2 2.5
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
CWE-1321 Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

The product 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.

https://github.com/protobufjs/protobuf.js/security/advisories/GHSA-jfj6-75fj-8934
Vendor Advisory
Mitigation
https://github.com/protobufjs/protobuf.js/pull/2335
Patch
Issue Tracking
https://github.com/protobufjs/protobuf.js/commit/9f97fe413072d3beb52c74e62d88ea8adc9444d8
Patch
https://github.com/protobufjs/protobuf.js/releases/tag/protobufjs-v8.6.5
Product
Release Notes