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CVE-2026-49268 (GCVE-0-2026-49268)

Vulnerability from cvelistv5 – Published: 2026-06-17 13:07 – Updated: 2026-06-17 17:02
VLAI
Title
Apache Shiro: LDAP DN Injection in DefaultLdapRealm
Summary
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.
Severity
8.8 (High)
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
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-17 15:02 UTC
CWE
  • CWE-90 - Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection')
Assigner
References
Impacted products
Vendor Product Version CPE status
Apache Software Foundation Apache Shiro Affected: 0 , ≤ 2.2.0 (semver)
Affected: 3.0.0-alpha-0 , ≤ 3.0.0-alpha-1 (semver)
guessed Create a notification for this product.
Credits
zhaokaifei (reporter) - ChinaTelecom Lenny Primak <lenny@flowlogix.com>
Show details on NVD website
To clipboard 

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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