PT-2026-34251 · Spring · Spring Security

Published 2026-04-22 · Updated 2026-04-22 · CVE-2026-22747

NVD

CVSS v3.1

6.8

Medium

AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N

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.

Fix

Related Identifiers

CVE-2026-22747

Affected Products

Spring Security

References · 2

• https://nvd.nist.gov/vuln/detail/CVE-2026-22747 · Security Note
• https://spring.io/security/cve-2026-22747 · Note