Vulnerability-Lookup

GHSA-3F3C-WC35-5WJV

Vulnerability from github – Published: 2026-03-07 15:30 – Updated: 2026-03-07 15:30

Details

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.

Severity

3.3 (Low)


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

1.9 (Low)


                  
                    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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-3664"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-119"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-03-07T15:15:56Z",
    "severity": "MODERATE"
  },
  "details": "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.",
  "id": "GHSA-3f3c-wc35-5wjv",
  "modified": "2026-03-07T15:30:17Z",
  "published": "2026-03-07T15:30:17Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-3664"
    },
    {
      "type": "WEB",
      "url": "https://github.com/xlnt-community/xlnt/issues/141"
    },
    {
      "type": "WEB",
      "url": "https://github.com/xlnt-community/xlnt/pull/147"
    },
    {
      "type": "WEB",
      "url": "https://github.com/oneafter/0128/blob/main/xl5/repro"
    },
    {
      "type": "WEB",
      "url": "https://github.com/xlnt-community/xlnt"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/?ctiid.349553"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/?id.349553"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/?submit.764646"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    },
    {
      "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/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:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2026-3664 (GCVE-0-2026-3664)

Vulnerability from cvelistv5 – Published: 2026-03-07 14:32 – Updated: 2026-03-11 16:29

Title

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

Summary

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:O/RC:C

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:O/RC:C

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-03-11 16:14 UTC

CWE

CWE-125 - Out-of-Bounds Read
CWE-119 - Memory Corruption

Assigner

VulDB mitre root

References

7 references

URL	Tags
https://vuldb.com/?id.349553	vdb-entrytechnical-description
https://vuldb.com/?ctiid.349553	signaturepermissions-required
https://vuldb.com/?submit.764646	third-party-advisory
https://github.com/xlnt-community/xlnt/issues/141	issue-tracking
https://github.com/oneafter/0128/blob/main/xl5/repro	exploit
https://github.com/xlnt-community/xlnt/pull/147	issue-trackingpatch
https://github.com/xlnt-community/xlnt/	product

Impacted products

1 product

Vendor	Product	Version
xlnt-community	xlnt	Affected: 1.6.0 Affected: 1.6.1

Credits

Oneafter (VulDB User)

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-3664",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-03-11T16:14:47.381463Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-03-11T16:29:17.998Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "modules": [
            "Encrypted XLSX File Parser"
          ],
          "product": "xlnt",
          "vendor": "xlnt-community",
          "versions": [
            {
              "status": "affected",
              "version": "1.6.0"
            },
            {
              "status": "affected",
              "version": "1.6.1"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "Oneafter (VulDB User)"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "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."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "baseScore": 4.8,
            "baseSeverity": "MEDIUM",
            "vectorString": "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",
            "version": "4.0"
          }
        },
        {
          "cvssV3_1": {
            "baseScore": 3.3,
            "baseSeverity": "LOW",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C",
            "version": "3.1"
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        },
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          "cvssV3_0": {
            "baseScore": 3.3,
            "baseSeverity": "LOW",
            "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C",
            "version": "3.0"
          }
        },
        {
          "cvssV2_0": {
            "baseScore": 1.7,
            "vectorString": "AV:L/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:OF/RC:C",
            "version": "2.0"
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          "descriptions": [
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      "providerMetadata": {
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          "name": "VDB-349553 | xlnt-community xlnt Encrypted XLSX File compound_document.cpp read_directory out-of-bounds",
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          "url": "https://vuldb.com/?id.349553"
        },
        {
          "name": "VDB-349553 | CTI Indicators (IOB, IOC, IOA)",
          "tags": [
            "signature",
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          ],
          "url": "https://vuldb.com/?ctiid.349553"
        },
        {
          "name": "Submit #764646 | xlnt-community xlnt commit bceb706 and before Memory Corruption",
          "tags": [
            "third-party-advisory"
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          "url": "https://vuldb.com/?submit.764646"
        },
        {
          "tags": [
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          ],
          "url": "https://github.com/xlnt-community/xlnt/issues/141"
        },
        {
          "tags": [
            "exploit"
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          "url": "https://github.com/oneafter/0128/blob/main/xl5/repro"
        },
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          "tags": [
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          "url": "https://github.com/xlnt-community/xlnt/pull/147"
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          "time": "2026-03-06T01:00:00.000Z",
          "value": "VulDB entry created"
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          "time": "2026-03-06T21:39:54.000Z",
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      "title": "xlnt-community xlnt Encrypted XLSX File compound_document.cpp read_directory out-of-bounds"
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    "datePublished": "2026-03-07T14:32:12.856Z",
    "dateReserved": "2026-03-06T20:34:45.441Z",
    "dateUpdated": "2026-03-11T16:29:17.998Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

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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GHSA-3F3C-WC35-5WJV

CVE-2026-3664 (GCVE-0-2026-3664)

Tags

Sightings

Nomenclature

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