Vulnerability in Spring Security Affects User Authentication
CVE-2026-22747

6.8MEDIUM

Key Information:

Vendor

Spring

Status
Spring Security
Vendor
CVE Published:
22 April 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-22747?

A vulnerability in Spring Security allows malformed X.509 certificate CN values to be incorrectly processed, potentially leading to unauthorized user impersonation. By exploiting this flaw, an attacker could present a specially crafted certificate that misrepresents another user's identity, posing significant risks to system integrity and user privacy. It is crucial for organizations using affected versions of Spring Security to assess their exposure and apply necessary updates to mitigate this risk.

Affected Version(s)

Spring Security 7.0.0 <= 7.0.4

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-22747
Created by yakissa

References

https://spring.io/security/cve-2026-22747

CVSS V3.1

Score:
6.8
Severity:
MEDIUM
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

.