Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

Go to Calendar     Go to Press Room     Go to Newsletters subscription

Search

CVE-2026-47838

Severity CVSS v4.0:
Pending analysis
Type:
CWE-287 Authentication Issues
Publication date:
10/06/2026
Last modified:
23/07/2026

Description

SubjectDnX509PrincipalExtractor 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.<br /> <br /> Affected versions:<br /> Spring Security 5.7.0 through 5.7.24; 5.8.0 through 5.8.26; 6.3.0 through 6.3.17; 6.4.0 through 6.4.17; 6.5.0 through 6.5.10.

Impact

Vector 3.x
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N CVSS v3.1 Severity and Metrics:

Base Score: 6.80 MEDIUM
Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N

Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): None

Base Score 3.x
6.80
Severity 3.x
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:vmware:spring_security:*:*:*:*:*:*:*:* 5.7.25 (excluding)
cpe:2.3:a:vmware:spring_security:*:*:*:*:*:*:*:* 5.8.0 (including) 5.8.27 (excluding)
cpe:2.3:a:vmware:spring_security:*:*:*:*:*:*:*:* 6.3.0 (including) 6.3.18 (excluding)
cpe:2.3:a:vmware:spring_security:*:*:*:*:*:*:*:* 6.4.0 (including) 6.4.18 (excluding)
cpe:2.3:a:vmware:spring_security:*:*:*:*:*:*:*:* 6.5.0 (including) 6.5.11 (excluding)

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools