Authentication Bypass with Empty Password in Spring LDAP

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-41720
StatePUBLISHED
Assignervmware
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-06-09 05:16:35 UTC
Updated2026-06-23 21:16:57 UTC
DescriptionSpring 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.

Risk And Classification

Primary CVSS: v3.1 7.4 HIGH from [email protected]

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

EPSS: 0.002570000 probability, percentile 0.169380000 (date 2026-06-28)

Problem Types: CWE-287 | CWE-287 CWE-287: Improper Authentication

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary7.4HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
3.1CNACVSS7.4HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Spring Spring LDAP affected 2.4.0 2.4.5 custom Not specified
CNA Spring Spring LDAP affected 3.2.0 3.2.18 custom Not specified
CNA Spring Spring LDAP affected 3.3.0 3.3.7.1 custom Not specified
CNA Spring Spring LDAP affected 4.0.0 4.0.3.1 custom Not specified

References

ReferenceSourceLinkTags
spring.io/security/cve-2026-41720 [email protected] spring.io
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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