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. Protobuf.js (aka protobufjs) 6.10.0 through 7.x before 7.2.4 allows Prototype Pollution, a different vulnerability than CVE-2022-25878.
This issue has been patched in Knowage version 8.1.8.
This vulnerability allows a low privileged attacker to exfiltrate sensitive configuration file. However, starting in the 6.x.x branch and prior to version 8.1.8, the application does not sanitize the `_templateName_ `parameter allowing an attacker to use `*./*` in it, and escaping the directory the template are normally placed and download any file from the system. The endpoint `_/knowage/restful-services/dossier/importTemplateFile_` allows authenticated users to download template hosted on the server. Knowage is the professional open source suite for modern business analytics over traditional sources and big data systems.
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