GHSA-x96m-rh44-vgv8

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.

Database specific

{
    "github_reviewed": true,
    "github_reviewed_at": "2026-06-18T14:37:08Z",
    "nvd_published_at": "2026-06-17T14:17:56Z",
    "severity": "HIGH",
    "cwe_ids": [
        "CWE-90"
    ]
}

References

Affected packages

Maven / org.apache.shiro:shiro-core

Package

Name: org.apache.shiro:shiro-core; View open source insights on deps.dev
Purl: pkg:maven/org.apache.shiro/shiro-core

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

2.2.1

Affected versions

1.*

1.0.0-incubating

1.1.0

1.2.0

1.2.1

1.2.2

1.2.3

1.2.4

1.2.5

1.2.6

1.3.0

1.3.1

1.3.2

1.4.0-RC2

1.4.0

1.4.1

1.4.2

1.5.0

1.5.1

1.5.2

1.5.3

1.6.0

1.7.0

1.7.1

1.8.0

1.9.0

1.9.1

1.10.0

1.10.1

1.11.0

1.12.0

1.13.0

2.*

2.0.0-alpha-1

2.0.0-alpha-2

2.0.0-alpha-3

2.0.0-alpha-4

2.0.0

2.0.1

2.0.2

2.0.3

2.0.4

2.0.5

2.0.6

2.1.0

2.2.0

Database specific

source

"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-x96m-rh44-vgv8/GHSA-x96m-rh44-vgv8.json"