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Medium

Spring Security Vulnerable to Unauthorized User Impersonation when Using X.509 Client Certificates

  • Disclosed: 22.04.2026
  • Updated: 11.10.2026 13:20

Vulnerability in Spring Spring Security. SubjectX500PrincipalExtractor 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. This issue affects Spring Security: from 7.0.0 through 7.0.4.

Affected software

Click a technology to see all vulnerabilities affecting it.

PlatformPackageVulnerable versionsFixed in
Java / Kotlin (Maven) org.springframework.security:spring-security-web >= 7.0.0, < 7.0.5 7.0.5

References

CVSS score 6.8/10
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
Weakness (CWE)
CWE-297
Platform
Java / Kotlin (Maven)
Package
org.springframework.security:spring-security-web
Disclosed
22.04.2026
Updated
11.10.2026 13:20

Sources and licenses

OSV / GitHub Advisory Database - GHSA-2jrg-rf5x-568g - CC BY 4.0

Vulnerability history: org.springframework.security:spring-security-web

All published vulnerabilities of this package (Java / Kotlin (Maven)), newest first. Shows whether this is a one-off slip or a package that needs watching.

Total entries
7
First → latest
05.2021 06.2026
Without a fix
0
Exploited in attacks
0

Severity breakdown

  • Critical 3
  • High 1
  • Medium 3

Disclosures per year

  1. Spring Security Vulnerable to Unauthorized User Impersonation when Using X.509 Client Certificates
    Medium · 6.8 CVE-2026-47838 >= 6.5.0, < 6.5.11, >= 6.4.0, <= 6.4.13, >= 6.0.0, <= 6.3.10, >= 5.8.0, <= 5.8.16, <= 5.7.14 6.5.11
  2. Spring Security: Open Redirect via Unvalidated Post-Login Redirect URL Stored in CookieRequestCache
    Medium · 6.1 CVE-2026-41706 >= 7.0.0, < 7.0.6, >= 6.5.0, < 6.5.11, >= 6.3.0, <= 6.3.16, >= 5.8.0, <= 5.8.25, <= 5.7.23 7.0.6, 6.5.11
  3. Spring Security Vulnerable to Unauthorized User Impersonation when Using X.509 Client Certificates this entry
    Medium · 6.8 CVE-2026-22747 >= 7.0.0, < 7.0.5 7.0.5
  4. Spring Security HTTP Headers Are not Written Under Some Conditions
    Critical · 9.1 CVE-2026-22732 <= 5.7.14, >= 5.8.0, <= 5.8.16, >= 6.0.0, <= 6.3.10, >= 6.4.0, <= 6.4.13, >= 6.5.0, < 6.5.9, >= 7.0.0, < 7.0.4 6.5.9, 7.0.4
  5. Spring Security vulnerable to Authorization Bypass of Static Resources in WebFlux Applications
    Critical · 9.1 CVE-2024-38821 >= 5.0.0, < 5.7.13, >= 5.8.0, < 5.8.15, >= 6.2.0, < 6.2.7, >= 6.0.0, < 6.0.13, >= 6.1.0, < 6.1.11, >= 6.3.0, < 6.3.4 5.7.13, 5.8.15, 6.2.7, 6.0.13, 6.1.11, 6.3.4
  6. Authorization bypass in Spring Security
    Critical · 9.8 CVE-2022-22978 >= 5.5.0, < 5.5.7, >= 5.6.0, < 5.6.4, < 5.4.11 5.5.7, 5.6.4, 5.4.11
  7. Privilege escalation in spring security
    High · 8.8 CVE-2021-22112 >= 5.4.0, < 5.4.4, >= 5.3.0, < 5.3.8, < 5.2.9 5.4.4, 5.3.8, 5.2.9

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