Apache Zeppelin: LDAP filter injection in LdapRealm — incomplete fix of CVE-2024-31867

{
  "id": "7c0eeb734363a2fcf2f5f34e81eefc7477843ab84b3410ef1e08c56ade140b13",
  "url": "https://osv.dev/vulnerability/CVE-2026-44617",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Apache Zeppelin: LDAP filter injection in LdapRealm — incomplete fix of CVE-2024-31867",
    "summary": "LDAP filter injection vulnerability in Apache Zeppelin. LdapRealm used RFC 4514 distinguished-name escaping when constructing LDAP search filters instead of RFC 4515 filter escaping, leaving special filter characters insufficiently escaped. This is an incomplete fix of CVE-2024-31867. This issue affects Apache Zeppelin versions 0.11.1, 0.11.2, and 0.12.0. Users are recommended to upgrade to version 0.12.1, which fixes this issue.",
    "evidence": "osv:CVE-2026-44617",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-44617",
      "aliases": [
        "CVE-2026-44617"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/apache/zeppelin",
              "type": "GIT",
              "events": [
                {
                  "introduced": "4419b4deeac67c0c7a1aeff388fa18ad6a086ddf"
                },
                {
                  "fixed": "ae9cb72ffaa6b3c007f57b152e2a3eb2208b910a"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0.11.1"
                      },
                      {
                        "fixed": "0.12.1"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "cpe": "cpe:2.3:a:apache:zeppelin:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0.11.1"
                      },
                      {
                        "fixed": "0.12.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-44617.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:36.824890444Z",
      "provider": "osv",
      "references": [
        "https://www.cve.org/CVERecord?id=CVE-2024-31867",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44617.json",
        "https://lists.apache.org/thread/s65t6n3s1v4j5b1w7zvv5w73ko69m1zv",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-44617",
        "https://github.com/apache/zeppelin/pull/5226"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-90"
        ],
        "cna_assigner": "apache",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44617.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-44617",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 504347,
  "published_at": "2026-07-30T15:22:39.054+00:00"
}