Input validation error in Spring Security - CVE-2026-22747

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Main Vulnerability Database Vulnerabilities #VU128228

Input validation error in Spring Security - CVE-2026-22747

Published: April 27, 2026


Vulnerability identifier: #VU128228
CSH Severity: Low
CVSS v4: 7.6 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-22747
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote user to impersonate another user.

The vulnerability exists due to improper input validation in SubjectX500PrincipalExtractor when processing malformed X.509 certificate CN values. A remote user can present a carefully crafted certificate to impersonate another user.

Exploitation presupposes compromise of a trusted upstream that validates the presented credentials in the pre-authentication flow.


Affected software

Spring Security
Communications Unified Assurance
Oracle Utilities Testing Accelerator
Oracle Financial Services Compliance Studio
Oracle Communications Cloud Native Core Policy
Oracle Communications Cloud Native Core Security Edge Protection Proxy
Oracle Communications Cloud Native Core Network Slice Selection Function
Oracle Communications Cloud Native Core Binding Support Function
Oracle Communications Cloud Native Core Network Repository Function

How to mitigate CVE-2026-22747

Install security update from vendor's website.

Spring Security - update to 7.0.5

External References

Related Security Bulletins