CVE-2026-41720

Authentication Bypass with Empty Password in Spring LDAP

State: Published
Severity: 7.4 High
Published: Jun 9, 2026
Updated: Jun 23, 2026
Reserved: Apr 22, 2026

Description

Spring LDAP's DirContextAuthenticationStrategy implementations do not reject a bind request where a non-empty username is paired with an empty or null password.

Affected versions: Spring LDAP 2.4.0 through 2.4.4; 3.2.0 through 3.2.17; 3.3.0 through 3.3.7; 4.0.0 through 4.0.3.

Scores

CVSS	Score	Vector	Source
3.1	7.4 High	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N	vmware

Weaknesses

CWE-287 Improper Authentication

Affected Products

Product	Versions
Spring LDAPSpring	2.4.0 to before 2.4.5Affected 3.2.0 to before 3.2.18Affected 3.3.0 to before 3.3.7.1Affected 4.0.0 to before 4.0.3.1Affected

References

https://spring.io/security/cve-2026-41720

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