{
  "schema_version": "1.7.0",
  "id": "MGASA-2026-0378",
  "published": "2026-09-05T04:35:57Z",
  "modified": "2026-09-05T04:22:59Z",
  "summary": "Updated mingw-expat & expat packages fix security vulnerabilities",
  "details": "Expat Denial of Service via storeAtts() Quadratic Complexity.\n(CVE-2026-66046)\nExpat Out-of-Bounds Read via dtdCopy. (CVE-2026-76641)\nIn libexpat 2.8.2 and 2.8.3 before 2.8.4, misinterpretation of\ngetentropy's return code leads to insufficient entropy, which results in\nbeing vulnerable to hash flooding attacks, causing a denial of service\nvia crafted XML content. (CVE-2026-76956)\nlibexpat before 2.8.4 lacks handler call depth tracking with custom\nencoding callbacks. Thus, a use-after-free can occur. (CVE-2026-76957)\n",
  "upstream": [
    "CVE-2026-66046",
    "CVE-2026-76641",
    "CVE-2026-76956",
    "CVE-2026-76957"
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://advisories.mageia.org/MGASA-2026-0378.html"
    },
    {
      "type": "REPORT",
      "url": "https://bugs.mageia.org/show_bug.cgi?id=36233"
    },
    {
      "type": "WEB",
      "url": "https://www.openwall.com/lists/oss-security/2026/08/31/13"
    },
    {
      "type": "WEB",
      "url": "https://blog.hartwork.org/posts/expat-2-8-4-released/"
    },
    {
      "type": "WEB",
      "url": "https://github.com/libexpat/libexpat/blob/R_2_8_4/expat/Changes"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/cve-2026-66046"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/cve-2026-76641"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/cve-2026-76956"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/cve-2026-76957"
    }
  ],
  "affected": [
    {
      "package": {
        "ecosystem": "Mageia:10",
        "name": "mingw-expat",
        "purl": "pkg:rpm/mageia/mingw-expat?arch=source&distro=mageia-10"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.8.4-1.mga10"
            }
          ]
        }
      ],
      "ecosystem_specific": {
        "section": "core"
      }
    },
    {
      "package": {
        "ecosystem": "Mageia:10",
        "name": "expat",
        "purl": "pkg:rpm/mageia/expat?arch=source&distro=mageia-10"
      },
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.8.4-1.mga10"
            }
          ]
        }
      ],
      "ecosystem_specific": {
        "section": "core"
      }
    }
  ],
  "credits": [
    {
      "name": "Mageia",
      "type": "COORDINATOR",
      "contact": [
        "https://wiki.mageia.org/en/Packages_Security_Team"
      ]
    }
  ]
}