Vulnerability-Lookup

GHSA-WQ72-H3FH-W757

Vulnerability from github – Published: 2026-06-15 18:31 – Updated: 2026-06-15 18:31

Details

LibreOffice can import documents in the OOXML format (DOCX). A heap buffer overflow existed when replaying deferred parser events for a text box element. A handler object was assumed to be of one type and written to at that type's field layout, but it could be a smaller object, so the write landed past the end of the allocation. In fixed versions the type is checked before the write.

Severity

5.4 (Medium)


                  
                    CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N/E:P

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{
  "affected": [],
  "aliases": [
    "CVE-2026-6047"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-787"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-15T18:16:37Z",
    "severity": "MODERATE"
  },
  "details": "LibreOffice can import documents in the OOXML format (DOCX). A heap buffer overflow existed when replaying deferred parser events for a text box element. A handler object was assumed to be of one type and written to at that type\u0027s field layout, but it could be a smaller object, so the write landed past the end of the allocation. In fixed versions the type is checked before the write.",
  "id": "GHSA-wq72-h3fh-w757",
  "modified": "2026-06-15T18:31:19Z",
  "published": "2026-06-15T18:31:19Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-6047"
    },
    {
      "type": "WEB",
      "url": "https://www.libreoffice.org/about-us/security/advisories/cve-2026-6047"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:H/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-2026-6047 (GCVE-0-2026-6047)

Vulnerability from cvelistv5 – Published: 2026-06-15 16:22 – Updated: 2026-06-15 18:11

Title

Heap buffer overflow in OOXML text box element import

Summary

Severity

5.4 (Medium)


                        
                          CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N/E:P

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-787 - Out-of-bounds Write
CWE-843 - Access of Resource Using Incompatible Type ('Type Confusion')

Assigner

Document Fdn.

References

1 reference

URL	Tags
https://www.libreoffice.org/about-us/security/adv…

Impacted products

1 product

Vendor	Product	Version
The Document Foundation	LibreOffice	Affected: 25.8 , < < 25.8.7 (25.8 series) Affected: 26.2 , < < 26.2.3 (26.2 series)

Date Public

2026-06-15 00:00

Credits

Anthropic (automated discovery using Claude) Trail of Bits (triage and validation)

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JSON

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      {
        "metrics": [
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                "id": "CVE-2026-6047",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-06-15T18:11:34.358602Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-06-15T18:11:48.806Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
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            "Recovery": "NOT_DEFINED",
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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.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-WQ72-H3FH-W757

CVE-2026-6047 (GCVE-0-2026-6047)

Tags

Sightings

Nomenclature