Critical severity · published Aug 27, 2026
CVE-2026-59270
Spring Security embedded UnboundID LDAP server exposes well-known administrative bind DN on all network interfaces
9.1
CVSS
0.4%
EPSS
No
On KEV
Description
Spring Security's embedded UnboundID LDAP server (UnboundIdContainer) unconditionally registers an administrative credential and binds its listener to all available network interfaces.
Spring Security 7.1.0
Spring Security 7.0.0 - 7.0.6
Spring Security 6.5.0 - 6.5.11
Spring Security 6.4.0 - 6.4.18
Spring Security 5.8.0 - 5.8.27
Spring Security 5.7.0 - 5.7.25
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 35% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SS
Spring Security · Spring
7.1.0; 7.0.0 through 7.0.6; 6.5.0 through 6.5.11; 6.4.0 through 6.4.18; 5.8.0 through 5.8.27; 5.7.0 through 5.7.25 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-59270
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-59270
Vendor Advisory
https://spring.io/security/cve-2026-59270
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