{"schema_version": "1.6.1", "id": "CVE-2025-59789", "summary": "Stack Exhaustion via Unbounded Recursion in JSON Parser", "details": "Uncontrolled recursion in the json2pb component in Apache bRPC (version < 1.15.0) on all platforms allows remote attackers to make the server crash via sending deep recursive json data.\n\nRoot Cause:\nThe bRPC json2pb component uses rapidjson to parse json data from the network. The rapidjson parser uses a recursive parsing method by default. If the input json has a large depth of recursive structure, the parser function may run into stack overflow.\n\nAffected Scenarios:\nUse bRPC server with protobuf message to serve http+json requests from untrusted network. Or directly use JsonToProtoMessage to convert json from untrusted input.\n\n\n\nHow to Fix: \n(Choose one of the following options) \n1. Upgrade bRPC to version 1.15.0, which fixes this issue.\n2. Apply this patch:  https://github.com/apache/brpc/pull/3099 \n\n\n\nNote:\nNo matter which option \n\nyou choose, you should know that the fix introduces a recursion depth limit with default value 100. It affects these functions: \n\nProtoMessageToJson, ProtoMessageToProtoJson, JsonToProtoMessage, and ProtoJsonToProtoMessage.\n\n If your requests contain json or protobuf messages that have a depth exceeding the limit, the request will be failed after applying the fix. You can modify the gflag json2pb_max_recursion_depth to change the limit.", "affected": [{"ranges": [{"type": "SEMVER", "events": [{"introduced": "0"}, {"fixed": "1.15.0"}]}]}], "references": [{"type": "WEB", "url": "https://lists.apache.org/thread/ozmcsztcpxn61jxod8jo8q46jo0oc1zx"}]}