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Firebird: Information leak vulnerability in firebird3 client when used with newer server

Type: advisorySources: OSV

Firebird is an open-source relational database management system. In versions FB3 of the client library placed incorrect data length values into XSQLDA fields when communicating with FB4 or higher servers, resulting in an information leak. This issue is fixed by upgrading to the FB4 client or higher.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2025-65104
Confirmed fixed CVEs
Not specified
Updated in this feed
2 Nov 2026, 19:58 UTC · Revision 1

Source evidence

Firebird: Information leak vulnerability in firebird3 client when used with newer server

core-osv · Original source

Published 17 Apr 2026, 17:47 UTC

Firebird is an open-source relational database management system. In versions FB3 of the client library placed incorrect data length values into XSQLDA fields when communicating with FB4 or higher servers, resulting in an information leak. This issue is fixed by upgrading to the FB4 client or higher.

osv:CVE-2025-65104
Complete source record
{
  "id": "ce560b7a11e7cfe77685acb768938354b5d1fcc273f8981d45a3f7897c3729b7",
  "url": "https://osv.dev/vulnerability/CVE-2025-65104",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Firebird: Information leak vulnerability in firebird3 client when used with newer server",
    "summary": "Firebird is an open-source relational database management system. In versions FB3 of the client library placed incorrect data length values into XSQLDA fields when communicating with FB4 or higher servers, resulting in an information leak. This issue is fixed by upgrading to the FB4 client or higher.",
    "evidence": "osv:CVE-2025-65104",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2025-65104",
      "aliases": [
        "CVE-2025-65104",
        "GHSA-mfpr-9886-xjhg"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:L"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/firebirdsql/firebird",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "463bae029a4426deff7e9bb08a8317aaa398c7c7"
                },
                {
                  "fixed": "141bb5491d24cb363f03c5a0786a32f73a1faa5b"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:firebirdsql:firebird:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "3.0.14"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "141bb5491d24cb363f03c5a0786a32f73a1faa5b"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "v4.0.0"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v3.0.13",
            "v3.0.12",
            "v3.0.11",
            "v3.0.10",
            "v3.0.9",
            "v3.0.8",
            "T4_0_0_RC1",
            "R3_0_7",
            "R3_0_6",
            "T4_0_0_Beta2",
            "R3_0_5",
            "T4_0_0_Beta1",
            "R3_0_4",
            "R3_0_3",
            "R3_0_2",
            "R3_0_1",
            "R3_0_0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-65104.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:23.344056907Z",
      "provider": "osv",
      "references": [
        "https://github.com/FirebirdSQL/firebird/releases/tag/v4.0.0",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/65xxx/CVE-2025-65104.json",
        "https://github.com/FirebirdSQL/firebird/security/advisories/GHSA-mfpr-9886-xjhg",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-65104"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-200"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/65xxx/CVE-2025-65104.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-65104",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 489495,
  "published_at": "2026-04-17T17:47:42.109+00:00"
}