Vulnerability-Lookup

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

Vulnerability from cvelistv5 – Published: 2026-06-17 13:07 – Updated: 2026-06-17 17:02

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

apache CNA under the mitre root

CNA scorecard B 76/100 over 1092 records in the last 180 days details

References

2 references

URL	Tags
https://lists.apache.org/thread/svszql3od8td7hn6c…	vendor-advisory
http://www.openwall.com/lists/oss-security/2026/06/17/8

Impacted products

1 product

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

Credits

zhaokaifei (reporter) - ChinaTelecom Lenny Primak <lenny@flowlogix.com>

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-49268

Vulnerability from fkie_nvd - Published: 2026-06-17 14:17 - Updated: 2026-10-26 00:10

Severity

9.1 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Summary

References

	URL	Tags
	security@apache.org	https://lists.apache.org/thread/svszql3od8td7hn6conyj2oq70v53b5s	Mailing List, Vendor Advisory
	af854a3a-2127-422b-91ae-364da2661108	http://www.openwall.com/lists/oss-security/2026/06/17/8	Third Party Advisory

Impacted products

	Vendor	Product	Version
	apache	shiro	*
	apache	shiro	3.0.0

JSON

To clipboard

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              "status": "affected",
              "version": "3.0.0-alpha-0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "security@apache.org"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:apache:shiro:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "0334436B-3B01-4618-8F44-5EB68F3952B8",
              "versionEndExcluding": "2.2.1",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:apache:shiro:3.0.0:alpha1:*:*:*:*:*:*",
              "matchCriteriaId": "C79C762D-108B-4C23-BEAF-0115D43D83BD",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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.\n\nThis issue affects all Apache Shiro versions through 2.2.0, and 3.0.0-alpha-1 when using\u00a0DefaultLdapRealm\nUpgrade to Apache Shiro 2.2.1 or 3.0.0-alpha-2 or later, which fixes the issue."
    },
    {
      "lang": "es",
      "value": "Un atacante remoto puede inyectar caracteres especiales LDAP en la construcci\u00f3n del Nombre Distinguido (DN) en la clase DefaultLdapRealm. La entrada de nombre de usuario proporcionada por el usuario se concatena directamente en la plantilla del DN LDAP sin ning\u00fan escape de los caracteres especiales RFC 2253. Esto permite a un atacante manipular la estructura del DN utilizada para la autenticaci\u00f3n de enlace LDAP, potencialmente eludiendo la autenticaci\u00f3n o suplantando a otros usuarios.\n\nEste problema afecta a todas las versiones de Apache Shiro hasta la 2.2.0, y a la 3.0.0-alpha-1 cuando se utiliza DefaultLdapRealm.\nActualice a Apache Shiro 2.2.1 o 3.0.0-alpha-2 o posterior, lo que soluciona el problema."
    }
  ],
  "id": "CVE-2026-49268",
  "lastModified": "2026-10-26T00:10:00.150",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 9.1,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.2,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "YES",
          "Recovery": "AUTOMATIC",
          "Safety": "PRESENT",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 8.8,
          "baseSeverity": "HIGH",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "NONE",
          "providerUrgency": "RED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:P/AU:Y/R:A/V:X/RE:L/U:Red",
          "version": "4.0",
          "vulnAvailabilityImpact": "NONE",
          "vulnConfidentialityImpact": "LOW",
          "vulnIntegrityImpact": "HIGH",
          "vulnerabilityResponseEffort": "LOW"
        },
        "source": "security@apache.org",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-49268",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-06-17T15:02:25.313149Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-06-17T14:17:56.903",
  "references": [
    {
      "source": "security@apache.org",
      "tags": [
        "Mailing List",
        "Vendor Advisory"
      ],
      "url": "https://lists.apache.org/thread/svszql3od8td7hn6conyj2oq70v53b5s"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "http://www.openwall.com/lists/oss-security/2026/06/17/8"
    }
  ],
  "sourceIdentifier": "security@apache.org",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-90"
        }
      ],
      "source": "security@apache.org",
      "type": "Secondary"
    }
  ]
}

GHSA-X96M-RH44-VGV8

Vulnerability from github – Published: 2026-06-17 18:35 – Updated: 2026-06-18 14:37

Summary

Apache Shiro: LDAP DN Injection in DefaultLdapRealm

Details

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

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.apache.shiro:shiro-core"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.2.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Maven",
        "name": "org.apache.shiro:shiro-core"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.0.0-alpha-0"
            },
            {
              "fixed": "3.0.0-alpha-2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-49268"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-90"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-06-18T14:37:08Z",
    "nvd_published_at": "2026-06-17T14:17:56Z",
    "severity": "HIGH"
  },
  "details": "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.\n\nThis issue affects all Apache Shiro versions through 2.2.0, and 3.0.0-alpha-1 when using\u00a0DefaultLdapRealm\nUpgrade to Apache Shiro 2.2.1 or 3.0.0-alpha-2 or later, which fixes the issue.",
  "id": "GHSA-x96m-rh44-vgv8",
  "modified": "2026-06-18T14:37:08Z",
  "published": "2026-06-17T18:35:55Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-49268"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/apache/shiro"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread/svszql3od8td7hn6conyj2oq70v53b5s"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2026/06/17/8"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "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",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Apache Shiro: LDAP DN Injection in DefaultLdapRealm"
}

UBUNTU-CVE-2026-49268 (CVE-2026-49268)

Vulnerability from osv_ubuntu – Published: 2026-06-17 14:17 – Updated: 2026-10-17 09:44 – Source website

Details

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

9.1 (Critical)


                    
                      CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-49268	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-49268	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libshiro-java",
            "binary_version": "1.2.4-1ubuntu0.1~esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "shiro",
        "purl": "pkg:deb/ubuntu/shiro@1.2.4-1ubuntu0.1~esm2?arch=source\u0026distro=esm-apps/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.2.4-1",
        "1.2.4-1ubuntu0.1~esm1",
        "1.2.4-1ubuntu0.1~esm2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libshiro-java",
            "binary_version": "1.3.2-3ubuntu0.18.04.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "shiro",
        "purl": "pkg:deb/ubuntu/shiro@1.3.2-3ubuntu0.18.04.1~esm1?arch=source\u0026distro=esm-apps/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.3.2-2",
        "1.3.2-3~18.04",
        "1.3.2-3~18.04.1",
        "1.3.2-3ubuntu0.18.04.1~esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libshiro-java",
            "binary_version": "1.3.2-4ubuntu0.2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "shiro",
        "purl": "pkg:deb/ubuntu/shiro@1.3.2-4ubuntu0.2?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.3.2-4",
        "1.3.2-4ubuntu0.1",
        "1.3.2-4ubuntu0.2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libshiro-java",
            "binary_version": "1.3.2-5"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "shiro",
        "purl": "pkg:deb/ubuntu/shiro@1.3.2-5?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.3.2-4",
        "1.3.2-5"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libshiro-java",
            "binary_version": "1.3.2-5ubuntu0.24.04.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:24.04:LTS",
        "name": "shiro",
        "purl": "pkg:deb/ubuntu/shiro@1.3.2-5ubuntu0.24.04.1~esm1?arch=source\u0026distro=esm-apps/noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.3.2-5",
        "1.3.2-5ubuntu0.24.04.1~esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libshiro-java",
            "binary_version": "1.3.2-6ubuntu1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "shiro",
        "purl": "pkg:deb/ubuntu/shiro@1.3.2-6ubuntu1?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.3.2-6ubuntu1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libshiro-java",
            "binary_version": "1.3.2-6ubuntu2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.10",
        "name": "shiro",
        "purl": "pkg:deb/ubuntu/shiro@1.3.2-6ubuntu2?arch=source\u0026distro=stonking"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.3.2-6ubuntu2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libshiro-java",
            "binary_version": "1.3.2-6ubuntu2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "shiro",
        "purl": "pkg:deb/ubuntu/shiro@1.3.2-6ubuntu2?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.3.2-6ubuntu1",
        "1.3.2-6ubuntu2"
      ]
    }
  ],
  "aliases": [],
  "details": "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\u00a0DefaultLdapRealm Upgrade to Apache Shiro 2.2.1 or 3.0.0-alpha-2 or later, which fixes the issue.",
  "id": "UBUNTU-CVE-2026-49268",
  "modified": "2026-10-17T09:44:20Z",
  "published": "2026-06-17T14:17:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-49268"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-49268"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "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",
      "type": "CVSS_V4"
    },
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-49268"
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

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

FKIE_CVE-2026-49268

GHSA-X96M-RH44-VGV8

UBUNTU-CVE-2026-49268 (CVE-2026-49268)

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Nomenclature

Vulnerability timeline

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