Alexander Fenster

4 exploits Active since May 2022
CVE-2026-41242 WRITEUP CRITICAL WRITEUP
protobufjs Type Fields - Arbitrary Code Execution
protobufjs compiles protobuf definitions into JavaScript (JS) functions. In versions prior to 8.0.1 and 7.5.5, attackers can inject arbitrary code in the "type" fields of protobuf definitions, which will then execute during object decoding using that definition. Versions 8.0.1 and 7.5.5 patch the issue.
CVSS 9.8
CVE-2026-41242 WRITEUP CRITICAL WRITEUP
protobufjs Type Fields - Arbitrary Code Execution
protobufjs compiles protobuf definitions into JavaScript (JS) functions. In versions prior to 8.0.1 and 7.5.5, attackers can inject arbitrary code in the "type" fields of protobuf definitions, which will then execute during object decoding using that definition. Versions 8.0.1 and 7.5.5 patch the issue.
CVSS 9.8
CVE-2022-25878 WRITEUP HIGH WRITEUP
protobufjs < 6.11.3 - Prototype Pollution via util.setProperty or ReflectionObject.setParsedOption
The package protobufjs before 6.11.3 are vulnerable to Prototype Pollution which can allow an attacker to add/modify properties of the Object.prototype. This vulnerability can occur in multiple ways: 1. by providing untrusted user input to util.setProperty or to ReflectionObject.setParsedOption functions 2. by parsing/loading .proto files
CVSS 8.2
CVE-2023-36665 WRITEUP CRITICAL WRITEUP
protobuf.js <7.2.5 - Prototype Pollution
"protobuf.js (aka protobufjs) 6.10.0 through 7.x before 7.2.5 allows Prototype Pollution, a different vulnerability than CVE-2022-25878. A user-controlled protobuf message can be used by an attacker to pollute the prototype of Object.prototype by adding and overwriting its data and functions. Exploitation can involve: (1) using the function parse to parse protobuf messages on the fly, (2) loading .proto files by using load/loadSync functions, or (3) providing untrusted input to the functions ReflectionObject.setParsedOption and util.setProperty.
CVSS 9.8