Security advisory

{
  "id": "070538f8a845bac80d7c09b24cc5cc6446357803f11bd4ad6ff532527240b867",
  "url": "https://osv.dev/vulnerability/CVE-2021-25786",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-25786",
    "summary": "An issue was discovered in QPDF version 10.0.4, allows remote attackers to execute arbitrary code via crafted .pdf file to Pl_ASCII85Decoder::write parameter in libqpdf.",
    "evidence": "osv:CVE-2021-25786",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2021-25786",
      "aliases": [
        "CVE-2021-25786"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/qpdf/qpdf",
              "type": "GIT",
              "events": [
                {
                  "introduced": "78b9d6bfd4cbd3e947b1c5ffe73eb97b040e312a"
                },
                {
                  "last_affected": "78b9d6bfd4cbd3e947b1c5ffe73eb97b040e312a"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:qpdf_project:qpdf:10.0.4:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "10.0.4"
                      },
                      {
                        "last_affected": "10.0.4"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "10.0.4",
            "release-qpdf-10.0.4"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-25786.json"
          }
        }
      ],
      "modified": "2026-10-20T10:54:33.559809170Z",
      "provider": "osv",
      "references": [
        "https://lists.debian.org/debian-lts-announce/2023/08/msg00037.html",
        "https://github.com/qpdf/qpdf/issues/492"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-25786",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 385571,
  "published_at": "2023-08-11T14:15:11.987+00:00"
}