xlnt-community xlnt Encrypted XLSX File compound_document.cpp read_directory out-of-bounds

{
  "id": "4693ba7d6f98330f4bb9a894df838b78b20b15461f1f0dad29b84da3b45a1ecd",
  "url": "https://osv.dev/vulnerability/CVE-2026-3664",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "xlnt-community xlnt Encrypted XLSX File compound_document.cpp read_directory out-of-bounds",
    "summary": "A vulnerability was determined in xlnt-community xlnt up to 1.6.1. Impacted is the function xlnt::detail::compound_document::read_directory of the file source/detail/cryptography/compound_document.cpp of the component Encrypted XLSX File Parser. Executing a manipulation can lead to out-of-bounds read. The attack is restricted to local execution. The exploit has been publicly disclosed and may be utilized. This patch is called 147. Applying a patch is advised to resolve this issue.",
    "evidence": "osv:CVE-2026-3664",
    "products": [],
    "severity": "low",
    "structured": {
      "id": "CVE-2026-3664",
      "aliases": [
        "CVE-2026-3664"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/xlnt-community/xlnt",
              "type": "GIT",
              "events": [
                {
                  "introduced": "8b28e662cbd9e6c2ff3e020a8a163564cbc48e42"
                },
                {
                  "last_affected": "3b25b084eab473bb6009b8e3d03ba5ff10bb4891"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "1.6.0"
                      },
                      {
                        "last_affected": "1.6.0"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandaloneSingleVersion"
                  },
                  {
                    "range": [
                      {
                        "introduced": "1.6.1"
                      },
                      {
                        "last_affected": "1.6.1"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandaloneSingleVersion"
                  },
                  {
                    "cpe": "cpe:2.3:a:xlnt-community:xlnt:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "1.6.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "1.6.0",
            "1.6.1",
            "v1.6.1",
            "v1.6.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-3664.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:42.264919171Z",
      "provider": "osv",
      "references": [
        "https://github.com/xlnt-community/xlnt/",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/3xxx/CVE-2026-3664.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-3664",
        "https://vuldb.com/?id.349553",
        "https://vuldb.com/?submit.764646",
        "https://github.com/xlnt-community/xlnt/issues/141",
        "https://vuldb.com/?ctiid.349553",
        "https://github.com/xlnt-community/xlnt/pull/147",
        "https://github.com/oneafter/0128/blob/main/xl5/repro"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-119",
          "CWE-125"
        ],
        "cna_assigner": "VulDB",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/3xxx/CVE-2026-3664.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-3664",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 509965,
  "published_at": "2026-03-07T14:32:12.856+00:00"
}