8.8

CVE-2026-49268

Apache Shiro: LDAP DN Injection in DefaultLdapRealm

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.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerApache Software Foundation
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Produkt Apache Shiro
Default Statusunaffected
Version <= 2.2.0
Version 0
Status affected
Version <= 3.0.0-alpha-1
Version 3.0.0-alpha-0
Status affected
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.49% 0.384
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
f0158376-9dc2-43b6-827c-5f631a4d8d09 8.8 0 0
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
Es wurden noch keine Informationen zu CWE veröffentlicht.
https://lists.apache.org/thread/svszql3od8td7hn6conyj2oq70v53b5s
vendor-advisory