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...

Infinite loop

Overview Affected versions of this package are vulnerable to Infinite loop in the option parsing. An attacker can cause the application to enter an infinite loop by submitting a crafted .proto schema that opens an option declaration and ends prematurely. Remediation Upgrade...