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    "cveMetadata": {
        "cveId": "CVE-2026-82210",
        "assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09",
        "state": "PUBLISHED",
        "assignerShortName": "apache",
        "dateReserved": "2026-08-28T08:27:23.061Z",
        "datePublished": "2026-10-21T12:01:31.264Z",
        "dateUpdated": "2026-10-21T12:01:31.264Z"
    },
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                "orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09",
                "shortName": "apache",
                "dateUpdated": "2026-10-21T12:01:31.264Z"
            },
            "title": "Apache bRPC: Remote denial of service (crash) via malformed stream feedback frames",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "description": "CWE-617 Reachable Assertion",
                            "lang": "en",
                            "cweId": "CWE-617",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "source": {
                "discovery": "INTERNAL"
            },
            "affected": [
                {
                    "vendor": "Apache Software Foundation",
                    "product": "Apache bRPC",
                    "packageURL": "pkg:github/apache/brpc",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "0",
                            "lessThan": "1.18.0",
                            "versionType": "semver"
                        }
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                    "packageName": "apache/brpc"
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                    "value": "Enforceable assertion in the streaming feature of Apache bRPC (version < 1.18.0) on all platforms allows a remote attacker to crash the server process by sending a malformed stream feedback frame.\n\nRoot Cause:\nWhen handling FRAME_TYPE_FEEDBACK frames, bRPC calls Stream::SetRemoteConsumed() which contains CHECK(_cur_buf_size > 0) and unconditionally asserts CHECK(buf.IsEmpty()) on the frame payload. A feedback frame that carries an unexpected payload, or a feedback frame received on a stream where flow control is disabled (cur_buf_size == 0), reaches these assertions. On failure, CHECK failures abort the process, allowing an unauthenticated single client (once a stream is established) to terminate the server and cause a denial of service.\n\nAffected Scenarios:\nUse bRPC server with the streaming control feature (Stream API) served from untrusted network.\n\nHow to Fix:\n1. Upgrade bRPC to version 1.18.0, which fixes this issue.\n2. Apply this patch:  https://github.com/apache/brpc/pull/3494 \n\nThe fix rejects malformed feedback frames with EPROTO and closes only the affected stream instead of crashing the whole process, and it bounds buffer shrinking so cur_buf_size never drops to 0 while flow control is enabled.",
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                            "value": "Enforceable assertion in the streaming feature of Apache bRPC (version &lt; 1.18.0) on all platforms allows a remote attacker to crash the server process by sending a malformed stream feedback frame.<br><br>Root Cause:<br>When handling FRAME_TYPE_FEEDBACK frames, bRPC calls Stream::SetRemoteConsumed() which contains CHECK(_cur_buf_size &gt; 0) and unconditionally asserts CHECK(buf.IsEmpty()) on the frame payload. A feedback frame that carries an unexpected payload, or a feedback frame received on a stream where flow control is disabled (cur_buf_size == 0), reaches these assertions. On failure, CHECK failures abort the process, allowing an unauthenticated single client (once a stream is established) to terminate the server and cause a denial of service.<br><br>Affected Scenarios:<br>Use bRPC server with the streaming control feature (Stream API) served from untrusted network.<br><br>How to Fix:<br>1. Upgrade bRPC to version 1.18.0, which fixes this issue.<br>2. Apply this patch: <a target=\"_blank\" rel=\"nofollow\" href=\"https://github.com/apache/brpc/pull/3494\">https://github.com/apache/brpc/pull/3494</a><br><br>The fix rejects malformed feedback frames with EPROTO and closes only the affected stream instead of crashing the whole process, and it bounds buffer shrinking so cur_buf_size never drops to 0 while flow control is enabled."
                        }
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                }
            ],
            "references": [
                {
                    "url": "https://lists.apache.org/thread/2pf15ojj0vr7rtx95677kgtl1mx3gdgb",
                    "tags": [
                        "vendor-advisory"
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                        "content": {
                            "text": "medium"
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                            "lang": "en",
                            "value": "GENERAL"
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