CVE-2026-48830 Apache bRPC: HTTP builtin request can mark a connection authenticated and bypass auth for later requests
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-48830?
CVE-2026-48830 is a vulnerability in Apache bRPC, published on 21 Oct 2026.
Official 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
Weakness: CWE-287
Which versions are affected by CVE-2026-48830?
How do I fix CVE-2026-48830?
No fix has been published for CVE-2026-48830 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-48830 being exploited?
There is no known exploitation of CVE-2026-48830 in the wild and no public exploit code.
Sources
Also known as GHSA-7758-m63q-7vr5.