High

Security advisory

Type: advisorySources: OSVCVE: CVE-2019-9853

LibreOffice documents can contain macros. The execution of those macros is controlled by the document security settings, typically execution of macros are blocked by default. A URL decoding flaw existed in how the urls to the macros within the document were processed and categorized, resulting in the possibility to construct a document where macro execution bypassed the security settings. The documents were correctly detected as containing macros, and prompted the user to their existence within the documents, but macros within the document were subsequently not controlled by the security settings allowing arbitrary macro execution This issue affects: LibreOffice 6.2 series versions prior to 6.2.7; LibreOffice 6.3 series versions prior to 6.3.1.

Products: Not specified
Affected versions: Not specified
Fixed versions: Not specified
CVEs: CVE-2019-9853
Confirmed fixed CVEs: Not specified
Updated in this feed: 1 Nov 2026, 08:12 UTC · Revision 1

Source evidence

CVE-2019-9853

core-osv · Original source

Published 27 Sept 2019, 16:15 UTC

osv:CVE-2019-9853

Complete source record

{
  "id": "0c350b2787127631c9ca4182699922c594a22448d823531f56293a290161a3be",
  "url": "https://osv.dev/vulnerability/CVE-2019-9853",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2019-9853",
    "summary": "LibreOffice documents can contain macros. The execution of those macros is controlled by the document security settings, typically execution of macros are blocked by default. A URL decoding flaw existed in how the urls to the macros within the document were processed and categorized, resulting in the possibility to construct a document where macro execution bypassed the security settings. The documents were correctly detected as containing macros, and prompted the user to their existence within the documents, but macros within the document were subsequently not controlled by the security settings allowing arbitrary macro execution This issue affects: LibreOffice 6.2 series versions prior to 6.2.7; LibreOffice 6.3 series versions prior to 6.3.1.",
    "evidence": "osv:CVE-2019-9853",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2019-9853",
      "aliases": [
        "CVE-2019-9853"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/libreoffice/core",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "7c4bdddf82580ab62e442ff6497af92e69fddd5e"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:libreoffice:libreoffice:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "6.2.0"
                      },
                      {
                        "fixed": "6.2.6"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "cp-6.2-5",
            "CP-Android-iOS-4.2.0",
            "cp-6.2-4",
            "CODE-4.2.0-4",
            "cp-6.2-3",
            "CODE-4.2.0-3",
            "CODE-4.2.0-2",
            "co-6.2-2",
            "CODE-4.2.0-1",
            "co-6.2-1",
            "cp-6.2-branch-point",
            "libreoffice-6-2-branch-point",
            "libreoffice-6-1-branch-point",
            "libreoffice-6-0-branch-point",
            "gpg4libre-review-5.4.99",
            "libreoffice-5-4-branch-point",
            "libreoffice-5-3-branch-point",
            "libreoffice-5-2-branch-point",
            "libreoffice-5-1-branch-point",
            "libreoffice-5-0-branch-point",
            "libreoffice-4-4-branch-point",
            "libreoffice-4-3-branch-point",
            "sdremote-2.0.0",
            "libreoffice-4-2-branch-point",
            "libreoffice-4-2-milestone-1",
            "libreoffice-4-1-branch-point",
            "libreoffice-4-0-branch-point",
            "libreoffice-3-6-branch-point",
            "libreoffice-3.5.0.0",
            "libreoffice-3-5-branch-point",
            "windows_build_successful_2011_11_08",
            "MELD_LIBREOFFICE_REPOS"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-9853.json"
          }
        }
      ],
      "modified": "2026-10-24T10:31:04.306478324Z",
      "provider": "osv",
      "references": [
        "https://lists.apache.org/thread.html/19c917f7c8a0d8f62142046fabfe3e2c7d6091ef1f92b99c6e79e24e%40%3Ccommits.openoffice.apache.org%3E",
        "https://lists.apache.org/thread.html/27339e8a9a1e9bb47fbdb939b338256d0356250a1974aaf4d774f683%40%3Ccommits.openoffice.apache.org%3E",
        "https://lists.apache.org/thread.html/306a374361891eb17c6cffc99c3d7be1d3152a99c839d4231edc1631%40%3Ccommits.openoffice.apache.org%3E",
        "https://lists.apache.org/thread.html/3a5570ca5cd14ad08e24684c71cfeff3a507f108fe3cf30ba4f58226%40%3Ccommits.openoffice.apache.org%3E",
        "https://lists.apache.org/thread.html/4ae0e6e52600f408d943ded079d314733ce188b04b04471464f89c4f%40%3Ccommits.openoffice.apache.org%3E",
        "https://lists.apache.org/thread.html/70da9481dca267405e1d79e53942264765ef3f55c9a563c3737e3926%40%3Ccommits.openoffice.apache.org%3E",
        "https://lists.apache.org/thread.html/7394e6b5f78a878bd0c44e9bc9adf90b8cdf49e9adc0f287145aba9b%40%3Ccommits.openoffice.apache.org%3E",
        "https://lists.apache.org/thread.html/9dc85d9937ad7f101047c53f78c00e8ceb135eaeff7dcf4724b46f2c%40%3Ccommits.openoffice.apache.org%3E",
        "https://lists.apache.org/thread.html/a5231ad45b030b54828c7b0b62a7e7d4b48481c7cb83ff628e07fa43%40%3Ccommits.openoffice.apache.org%3E",
        "https://lists.apache.org/thread.html/a540d1b6f9a7ebb206adba02839f654a6ee63a7b0976f559a847e49a%40%3Ccommits.openoffice.apache.org%3E",
        "https://lists.apache.org/thread.html/ca216900abd846f0220fe18b95f9f787bdbe0e87fa4eee822073cd69%40%3Ccommits.openoffice.apache.org%3E",
        "https://lists.debian.org/debian-lts-announce/2019/10/msg00005.html",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KQGBRSD73KTDZ2MPAOL7FBWO3SQVYE5B/",
        "https://www.libreoffice.org/about-us/security/advisories/CVE-2019-9853/"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:a:libreoffice:libreoffice:*:*:*:*:*:*:*:*"
            ],
            "vendor_product": "libreoffice:libreoffice",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "6.3.0"
                  },
                  {
                    "fixed": "6.3.1"
                  }
                ],
                "source": "CPE_RANGE"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2019-9853",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 440480,
  "published_at": "2019-09-27T16:15:11.013+00:00"
}