CVE-2026-48830

critical · 9.1

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

9.1

CVSS

0.3%

EPSS (exploit prob.)

18th

EPSS percentile

2026-10-21

Published

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Weaknesses

CWE-287

References

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

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-48830