Information Exposure Through an Error Message in Spring gRPC - CVE-2026-40969
Published: April 28, 2026
Vulnerability identifier: #VU128370
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-40969
CWE-ID: CWE-209
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Broadcom
Affected software:
Spring gRPC
Spring gRPC
Detailed vulnerability description
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to information exposure through an error message in the gRPC status description when returning server-side AuthenticationException details to the client. A remote attacker can trigger an authentication failure to disclose sensitive information.
How to mitigate CVE-2026-40969
Install security update from vendor's website.