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CVE

CVE-2026-41720

Spring LDAP has Authentication Bypass with Empty Password
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CVE

CVE-2026-41720

Spring LDAP has Authentication Bypass with Empty Password

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.

Package Versions Affected

Package Version
patch Availability
org.springframework.ldap:spring-ldap-core 2.3.1.RELEASE
Available
Available by request

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
7.4
-
3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
C
H
U
7.4
-
3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Related Resources

No items found.

References

https://nvd.nist.gov/vuln/detail/CVE-2026-41720, https://github.com/spring-projects/spring-ldap/issues/407, https://github.com/spring-projects/spring-ldap/commit/30b90c9fb61af87208ed051fc31349ef4d418f75, https://github.com/spring-projects/spring-ldap/commit/5cc73a6b7fb1d2bcb950c4d69221c6d192d79795, https://github.com/spring-projects/spring-ldap/commit/e2748d44bdce4f6cb4663b9b8d8462e34808f09c, https://github.com/spring-projects/spring-ldap, https://github.com/spring-projects/spring-ldap/releases/tag/3.3.8, https://github.com/spring-projects/spring-ldap/releases/tag/4.0.4, https://spring.io/security/cve-2026-41720

Severity

7.4

CVSS Score
0
10

Basic Information

Base CVSS
7.4
EPSS Probability
0.00257%
EPSS Percentile
0.1738%
Introduced Version
4.1.0-M1,4.0.0-M1,1.3.1.RELEASE,1.3.0.RELEASE,1.2,0
Fix Available
4.1.0,4.0.4,3.3.8,1.5.0-r12,1.5.0-r6

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