Security Bulletin: Multiple Security Vulnerabilities in Spring Security affect IBM Sterling B2B Integrator and IBM Sterling File Gateway

Summary IBM Sterling B2B Integrator and IBM Sterling File Gateway have addressed the security vulnerabilities Vulnerability Details CVEID:CVE-2026-40988 DESCRIPTION: An application using spring-security-saml2-service-provider and the REDIRECT binding for SAML 2.0 Login or Logout may be vulnerable...

CVE-2026-47838

SubjectDnX509PrincipalExtractor does not correctly handle certain malformed X.509 certificate CN values, which can lead to reading the wrong value for the username. In a carefully crafted certificate, this can lead to an attacker impersonating another user. Affected versions: Spring Security 5.7....

CVE-2026-47838: Improper Authentication

SubjectDnX509PrincipalExtractor does not correctly handle certain malformed X.509 certificate CN values, which can lead to reading the wrong value for the username. In a carefully crafted certificate, this can lead to an attacker impersonating another user. Affected versions: Spring Security 5.7....

User Impersonation

Overview org.springframework.security:spring-security-config is a security configuration package for Spring Framework. Affected versions of this package are vulnerable to User Impersonation via username extraction in SubjectDnX509PrincipalExtractor. An attacker can impersonate another user by...