Root Cause:
The 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.
Affected Scenarios:
Use bRPC server with protobuf message to serve http+json requests from untrusted network. Or directly use JsonToProtoMessage to convert json from untrusted input.
How to Fix:
(Choose one of the following options)
1. Upgrade bRPC to version 1.15.0, which fixes this issue.
2. Apply this patch: https://github.com/apache/brpc/pull/3099
Note:
No matter which option
you choose, you should know that the fix introduces a recursion depth limit with default value 100. It affects these functions:
ProtoMessageToJson, ProtoMessageToProtoJson, JsonToProtoMessage, and ProtoJsonToProtoMessage.
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.
Analysis and contextual insights are available on OpenCVE Cloud.
No vendor fix or workaround currently provided.
Additional remediation guidance may be available on OpenCVE Cloud.
Tracking
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Tue, 02 Dec 2025 14:45:00 +0000
| Type | Values Removed | Values Added |
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| CPEs | cpe:2.3:a:apache:brpc:*:*:*:*:*:*:*:* |
Mon, 01 Dec 2025 15:30:00 +0000
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| First Time appeared |
Apache
Apache brpc |
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| Vendors & Products |
Apache
Apache brpc |
Mon, 01 Dec 2025 15:15:00 +0000
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| Metrics |
cvssV3_1
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Mon, 01 Dec 2025 11:30:00 +0000
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Mon, 01 Dec 2025 10:45:00 +0000
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| Description | 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. Root Cause: The 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. Affected Scenarios: Use bRPC server with protobuf message to serve http+json requests from untrusted network. Or directly use JsonToProtoMessage to convert json from untrusted input. How to Fix: (Choose one of the following options) 1. Upgrade bRPC to version 1.15.0, which fixes this issue. 2. Apply this patch: https://github.com/apache/brpc/pull/3099 Note: No matter which option you choose, you should know that the fix introduces a recursion depth limit with default value 100. It affects these functions: ProtoMessageToJson, ProtoMessageToProtoJson, JsonToProtoMessage, and ProtoJsonToProtoMessage. 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. | |
| Title | Apache bRPC: Stack Exhaustion via Unbounded Recursion in JSON Parser | |
| Weaknesses | CWE-674 | |
| References |
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Status: PUBLISHED
Assigner: apache
Published:
Updated: 2025-12-01T15:05:18.284Z
Reserved: 2025-09-20T06:17:58.940Z
Link: CVE-2025-59789
Updated: 2025-12-01T11:05:54.538Z
Status : Analyzed
Published: 2025-12-01T11:15:48.377
Modified: 2025-12-02T14:39:47.780
Link: CVE-2025-59789
No data.
OpenCVE Enrichment
Updated: 2025-12-01T15:17:50Z