CVE-2026-22747

Summary

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

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: no
  • Technical Impact: total

Spring Security: Spring Security: User impersonation via malformed X.509 certificate Common Name (CN) values

Additional References

• https://access.redhat.com/security/cve/CVE-2026-22747
• https://bugzilla.redhat.com/show_bug.cgi?id=2460487
• https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-22747.json

References

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

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