Reachable assertion in Apache bRPC - CVE-2026-82425
Published: October 23, 2026
Vulnerability identifier: #VU157360
CSH Severity: Medium
CVSS v4: 8.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-82425
CWE-ID: CWE-617
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service by aborting a bRPC client process.
The vulnerability exists due to a reachable assertion in Apache bRPC's Socket::OnInputEvent when a stale input event reaches a socket revived by health checking while its file descriptor remains closed. A remote attacker can deliberately abort connections and immediately accept health-check probes to race connection teardown against socket revival and trigger a process-terminating CHECK failure.
Affected software
Apache bRPC
How to mitigate CVE-2026-82425
Install security update from vendor's website.
Apache bRPC - update to 1.18.0