CVE-2026-41720
High
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.
SeverityHigh
CVSS7.4
Exploit probability—
ProductOrg.springframework.ldap:spring-ldap-core
PublishedJun 9, 2026
First seenJun 9, 2026
Weakness typeCWE-287Improper authentication
How to fix
Update
- org.springframework.ldap:spring-ldap-core4.0.4, 3.3.8 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| org.springframework.ldap:spring-ldap-coreMaven | 4.0.0 ≤ v < 4.0.4, 3.3.0 ≤ v < 3.3.8, 3.2.0 ≤ v ≤ 3.2.16, v ≤ 2.4.4 | 4.0.4, 3.3.8 |
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