Improper authentication in Apache bRPC through 1.17.0 allows a remote unauthenticated attacker to bypass authentication for protected non-builtin HTTP endpoints by first sending a builtin HTTP request on the same HTTP/1.1 keep-alive connection.

When ServerOptions.auth is enabled and builtin HTTP services are exposed on the public listener, a builtin request received as the first message on a socket may cause the connection to be treated as authenticated for later requests on that socket. Users are recommended to upgrade to version 1.18.0, which fixes this issue, or apply this PR separately: https://github.com/apache/brpc/pull/3308

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Wed, 21 Oct 2026 11:45:00 +0000

Type Values Removed Values Added
Description Improper authentication in Apache bRPC through 1.17.0 allows a remote unauthenticated attacker to bypass authentication for protected non-builtin HTTP endpoints by first sending a builtin HTTP request on the same HTTP/1.1 keep-alive connection. When ServerOptions.auth is enabled and builtin HTTP services are exposed on the public listener, a builtin request received as the first message on a socket may cause the connection to be treated as authenticated for later requests on that socket. Users are recommended to upgrade to version 1.18.0, which fixes this issue, or apply this PR separately: https://github.com/apache/brpc/pull/3308
Title Apache bRPC: HTTP builtin request can mark a connection authenticated and bypass auth for later requests
Weaknesses CWE-287
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cve-icon MITRE

Status: PUBLISHED

Assigner: apache

Published:

Updated: 2026-10-21T11:30:15.288Z

Reserved: 2026-05-24T07:41:04.457Z

Link: CVE-2026-48830

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-10-21T12:17:20.910

Modified: 2026-10-21T12:17:20.910

Link: CVE-2026-48830

cve-icon Redhat

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cve-icon OpenCVE Enrichment

Updated: 2026-10-21T18:45:07Z

Weaknesses