CVE-2026-41720 json
Authentication Bypass with Empty Password in Spring LDAP
published 2026-06-09 5 mo ago modified 2026-09-10 1 mo ago also GHSA-jrv5-8w28-4265 , EUVD-2026-35324
- cvss
- 7.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 17%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- maven org.springframework.ldap:spring-ldap-core 3.3.8, 4.0.4
- Spring Spring LDAP 2.4.5, 3.2.18, 3.3.7.1, 4.0.3.1
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 5 mo ago
Exploit prediction
0.26% chance of exploitation in the next 30 days, higher than 17% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.4 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N |
| GitHub | 3.1 | 7.4 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| maven | org.springframework.ldap:spring-ldap-core | >=4.0.0, <4.0.4 >=3.3.0, <3.3.8 >=3.2.0, <=3.2.16 <=2.4.4 |
4.0.4 3.3.8 |
Affected products
- Spring Spring LDAP
Classification
- Weakness
-
- CWE-287 Improper Authentication
References
-
github.com
/spring-projects/spring-ldap/commit/30b90c9fb61af87208ed051fc31349ef4d418f75
web
-
github.com
/spring-projects/spring-ldap/commit/5cc73a6b7fb1d2bcb950c4d69221c6d192d79795
web
-
github.com
/spring-projects/spring-ldap/commit/e2748d44bdce4f6cb4663b9b8d8462e34808f09c
web
-
spring.io
/security/cve-2026-41720
web
-
nvd.nist.gov
/vuln/detail/CVE-2026-41720
advisory
-
github.com
/spring-projects/spring-ldap/issues/407
web
-
github.com
/spring-projects/spring-ldap
package
-
github.com
/spring-projects/spring-ldap/releases/tag/3.3.8
web
-
github.com
/spring-projects/spring-ldap/releases/tag/4.0.4
web
Sources
- CVE List CVE-2026-41720
- GitHub Advisory GHSA-jrv5-8w28-4265
- NVD CVE-2026-41720
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