EUVD Vulnerability Catalog

EUVD-2026-107168

Severity: CRITICAL Base Score: 9.1 CVSS Version: 3.1

Vulnerability 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

CVSS Vector Analysis

Below is the complete, human-readable breakdown of the CVSS metric string: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

▪ Attack Vector (AV): Network

▪ Attack Complexity (AC): Low

▪ Privileges Required (PR): None

▪ User Interaction (UI): None

▪ Scope (S): Unchanged

▪ Confidentiality Impact (C): High

▪ Integrity Impact (I): High

▪ Availability Impact (A): None

Affected Vendors & Systems

Vendor Apache Software Foundation

References & Advisory Links

https://lists.apache.org/thread/2pf15ojj0vr7rtx95677kgtl1mx3gdgb

Metadata Profile

Database Authority

European Union Agency for Cybersecurity (ENISA) EUVD

Assigner

apache

EPSS Probability

0.26

Known Aliases

CVE-2026-48830 GHSA-7758-m63q-7vr5

Published On

2026-10-21

Last Updated

2026-10-30