CVE-2026-59877

A flaw was found in protobufjs, a JavaScript JS library for compiling protobuf definitions. A remote attacker could exploit this vulnerability by providing a specially crafted .proto schema. This schema, designed to prematurely end an option declaration, can cause the library's parsing functions ...

protobufjs: Denial of Service via infinite loop in .proto option parsing

Summary protobufjs parsed option names by advancing through schema tokens until it reached an = token, without checking for end of input. A crafted .proto schema that opens an option declaration but ends prematurely could cause the option parser to loop without ever terminating. This affects the...