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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-49268 Detail

Description

A remote attacker can inject LDAP special characters into the Distinguished Name (DN) construction in DefaultLdapRealm class. User-supplied username input is directly concatenated into the LDAP DN template without any escaping of RFC 2253 special characters. This allows an attacker to manipulate the DN structure used for LDAP bind authentication, potentially bypassing authentication or impersonating other users. This issue affects all Apache Shiro versions through 2.2.0, and 3.0.0-alpha-1 when using DefaultLdapRealm Upgrade to Apache Shiro 2.2.1 or 3.0.0-alpha-2 or later, which fixes the issue.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

Nist CVSS score does not match with CNA score
CNA:  Apache Software Foundation
CVSS-B 8.8 HIGH
Vector:  CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N/S:P/AU:Y/R:A/RE:L/U:Red

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
http://www.openwall.com/lists/oss-security/2026/06/17/8 CVE
https://lists.apache.org/thread/svszql3od8td7hn6conyj2oq70v53b5s Apache Software Foundation

Weakness Enumeration

CWE-ID CWE Name Source
CWE-90 Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection') Apache Software Foundation  

Change History

3 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-49268
NVD Published Date:
06/17/2026
NVD Last Modified:
06/17/2026
Source:
Apache Software Foundation