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CVE-2026-41720

Authentication Bypass with Empty Password in Spring LDAP

HIGH
7.4
CVSS Score
Published: June 9, 2026 at 03:48 AM UTC
Updated: July 23, 2026 at 07:32 PM UTC
1 product affected across 1 vendorSpring LDAP

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Severity
HIGH7.4
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Spring LDAP· Spring
60%
2.4.0 ≤ v < 2.4.53.2.0 ≤ v < 3.2.183.3.0 ≤ v < 3.3.7.14.0.0 ≤ v < 4.0.3.12.4.03.2.03.3.04.0.0
Affected range stops below 2.4.5, so it looks safe — our inference, not a vendor statement
Affected range stops below 3.2.18, so it looks safe — our inference, not a vendor statement
Affected range stops below 3.3.7.1, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.0.3.1, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

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

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.4HIGHvmware
Attack Vector
NETWORK
Complexity
HIGH
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-287

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