Insecure Default Initialization of Resource in Spring Web Services - CVE-2026-40994
Published: August 28, 2026
Vulnerability identifier: #VU146185
CSH Severity: High
CVSS v4: 8.8 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-40994
CWE-ID: CWE-1188
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to bypass protocol-level security checks.
The vulnerability exists due to improper security configuration in Wss4jSecurityInterceptor when validating inbound WS-Security messages. A remote attacker can send a specially crafted message that violates BSP rules around signatures and related constructs to bypass protocol-level security checks.
Exploitation requires use of Wss4jSecurityInterceptor for inbound validation without explicitly enabling BSP compliance.
Affected software
Spring Web Services
How to mitigate CVE-2026-40994
Install security update from vendor's website.
Spring Web Services - addressed in versions 3.1.9, 4.0.19, 4.1.3.1, 4.1.4, 5.0.1.1, 5.0.2