SecuriTricks - CVE-2026-47838

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. Affected versions: 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.

Product(s) Impacted

Vendor	Product	Versions
Spring	Spring Security	5.7.0-5.7.24, 5.8.0-5.8.26, 6.3.0-6.3.17, 6.4.0-6.4.17, 6.5.0-6.5.10

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-287

Improper Authentication

When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.

*CPE(s)

Affected systems and software identified for this CVE.

Type	Vendor	Product	Version	Update	Edition	Language	Software Edition	Target Software	Target Hardware	Other Information
a	spring	spring_security	5.7.0-5.7.24	/	/	/	/	/	/	/
a	spring	spring_security	5.8.0-5.8.26	/	/	/	/	/	/	/
a	spring	spring_security	6.3.0-6.3.17	/	/	/	/	/	/	/
a	spring	spring_security	6.4.0-6.4.17	/	/	/	/	/	/	/
a	spring	spring_security	6.5.0-6.5.10	/	/	/	/	/	/	/

References

https://spring.io/security/cve-2026-47838

CVSS Score

6.8 / 10

CVSS Data - 3.1

Attack Vector: NETWORK
Attack Complexity: HIGH
Privileges Required: LOW
Scope: UNCHANGED
Confidentiality Impact: HIGH
Integrity Impact: HIGH
Availability Impact: NONE

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N

View Vector String

Timeline

Published: June 10, 2026, 12:16 a.m.
Last Modified: June 10, 2026, 12:16 a.m.

Status : Received

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

[email protected]

CVE-2026-47838