CVE-2026-3665 (GCVE-0-2026-3665)

Vulnerability from cvelistv5 – Published: 2026-03-07 15:32 – Updated: 2026-03-07 15:32
VLAI?
Title
xlnt-community xlnt XLSX File xlsx_consumer.cpp read_office_document null pointer dereference
Summary
A vulnerability was identified in xlnt-community xlnt up to 1.6.1. The affected element is the function xlnt::detail::xlsx_consumer::read_office_document of the file source/detail/serialization/xlsx_consumer.cpp of the component XLSX File Parser. The manipulation leads to null pointer dereference. The attack must be carried out locally. The exploit is publicly available and might be used.
Severity ?
4.8 (Medium)
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
3.3 (Low)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R
3.3 (Low)
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R
CWE
Assigner
References
Impacted products
Vendor Product Version
xlnt-community xlnt Affected: 1.6.0
Affected: 1.6.1
Create a notification for this product.
Credits
Oneafter (VulDB User)
Show details on NVD website
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "modules": [
            "XLSX File Parser"
          ],
          "product": "xlnt",
          "vendor": "xlnt-community",
          "versions": [
            {
              "status": "affected",
              "version": "1.6.0"
            },
            {
              "status": "affected",
              "version": "1.6.1"
            }
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        }
      ],
      "credits": [
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          "type": "reporter",
          "value": "Oneafter (VulDB User)"
        }
      ],
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          "value": "A vulnerability was identified in xlnt-community xlnt up to 1.6.1. The affected element is the function xlnt::detail::xlsx_consumer::read_office_document of the file source/detail/serialization/xlsx_consumer.cpp of the component XLSX File Parser. The manipulation leads to null pointer dereference. The attack must be carried out locally. The exploit is publicly available and might be used."
        }
      ],
      "metrics": [
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            "baseSeverity": "MEDIUM",
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            "baseSeverity": "LOW",
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      "providerMetadata": {
        "dateUpdated": "2026-03-07T15:32:08.520Z",
        "orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
        "shortName": "VulDB"
      },
      "references": [
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          "name": "VDB-349554 | xlnt-community xlnt XLSX File xlsx_consumer.cpp read_office_document null pointer dereference",
          "tags": [
            "vdb-entry",
            "technical-description"
          ],
          "url": "https://vuldb.com/?id.349554"
        },
        {
          "name": "VDB-349554 | CTI Indicators (IOB, IOC, IOA)",
          "tags": [
            "signature",
            "permissions-required"
          ],
          "url": "https://vuldb.com/?ctiid.349554"
        },
        {
          "name": "Submit #764647 | xlnt-community xlnt commit bceb706 and before NULL Pointer Dereference",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://vuldb.com/?submit.764647"
        },
        {
          "tags": [
            "issue-tracking"
          ],
          "url": "https://github.com/xlnt-community/xlnt/issues/140"
        },
        {
          "tags": [
            "exploit"
          ],
          "url": "https://github.com/oneafter/0128/blob/main/xl4/repro"
        },
        {
          "tags": [
            "product"
          ],
          "url": "https://github.com/xlnt-community/xlnt/"
        }
      ],
      "timeline": [
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          "lang": "en",
          "time": "2026-03-06T00:00:00.000Z",
          "value": "Advisory disclosed"
        },
        {
          "lang": "en",
          "time": "2026-03-06T01:00:00.000Z",
          "value": "VulDB entry created"
        },
        {
          "lang": "en",
          "time": "2026-03-06T21:39:55.000Z",
          "value": "VulDB entry last update"
        }
      ],
      "title": "xlnt-community xlnt XLSX File xlsx_consumer.cpp read_office_document null pointer dereference"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
    "assignerShortName": "VulDB",
    "cveId": "CVE-2026-3665",
    "datePublished": "2026-03-07T15:32:08.520Z",
    "dateReserved": "2026-03-06T20:34:47.839Z",
    "dateUpdated": "2026-03-07T15:32:08.520Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
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  }
}


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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.



Detection rules are retrieved from Rulezet.